JL Kruger
73f653ff23
Move 6 guide pages from Guides/ to ToolsnToys/ root; fix back-links. Add edu-toys.html (museum-style iframe exhibit for 4 legacy edu toy pages). Add 4 edu toy artifacts, dendritic curio, docker-cheatsheet-enhanced. Wire foss-tools, guides, edu-toys, and dendritic hrefs in toolsntoys.html. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
1955 lines
75 KiB
HTML
1955 lines
75 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="description" content="Comprehensive Docker and Docker Compose command reference with examples, troubleshooting, and best practices">
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<meta name="keywords" content="docker, docker compose, cheatsheet, reference, commands, tutorial">
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<title>Docker Command Cheatsheet | Quick Reference</title>
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<!-- Noto Emoji Font -->
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<link rel="preconnect" href="https://fonts.googleapis.com">
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<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
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<link href="https://fonts.googleapis.com/css2?family=Noto+Color+Emoji&display=swap" rel="stylesheet">
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<style>
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/* ===================================
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DOCKER CHEATSHEET DESIGN SYSTEM
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Dark mode, flat design, tech-focused
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Enhanced with accessibility & UX features
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=================================== */
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:root {
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/* Colors - Backgrounds */
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--bg-primary: #0B0B0B;
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--bg-elevated: #0F0F0F;
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--bg-card: #141414;
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--bg-code: #1A1A1A;
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/* Colors - Accents */
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--accent-orange: #EB7513;
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--accent-yellow: #F2C62A;
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--accent-green: #5E9A0E;
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--accent-red: #A52C16;
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--accent-burgundy: #69190D;
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--accent-blue: #4A90E2;
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/* Colors - Text */
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--text-primary: #F2F2BC;
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--text-muted: rgba(242, 242, 188, 0.7);
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--text-dim: rgba(242, 242, 188, 0.5);
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/* Spacing */
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--space-xs: 0.25rem;
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--space-sm: 0.5rem;
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--space-md: 1rem;
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--space-lg: 1.5rem;
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--space-xl: 2rem;
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--space-2xl: 3rem;
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/* Transitions */
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--transition-fast: 150ms ease;
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--transition-base: 300ms ease;
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/* Focus ring */
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--focus-ring: 0 0 0 3px rgba(235, 117, 19, 0.5);
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}
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/* Respect reduced motion preferences */
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@media (prefers-reduced-motion: reduce) {
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*, *::before, *::after {
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animation-duration: 0.01ms !important;
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animation-iteration-count: 1 !important;
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transition-duration: 0.01ms !important;
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scroll-behavior: auto !important;
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}
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}
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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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html {
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scroll-behavior: smooth;
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}
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body {
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font-family: 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
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background: var(--bg-primary);
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color: var(--text-primary);
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line-height: 1.6;
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padding: var(--space-lg);
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}
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/* Emoji font family */
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.emoji {
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font-family: 'Noto Color Emoji', 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif;
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}
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.container {
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max-width: 1400px;
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margin: 0 auto;
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}
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/* ===== SKIP NAVIGATION (ACCESSIBILITY) ===== */
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.skip-nav {
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position: absolute;
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top: -40px;
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left: 0;
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background: var(--accent-orange);
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color: var(--bg-primary);
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padding: var(--space-sm) var(--space-md);
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text-decoration: none;
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font-weight: bold;
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z-index: 1000;
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}
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.skip-nav:focus {
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top: 0;
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outline: 2px solid var(--accent-yellow);
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outline-offset: 2px;
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}
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/* ===== FOCUS INDICATORS (ACCESSIBILITY) ===== */
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*:focus-visible {
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outline: 2px solid var(--accent-orange);
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outline-offset: 2px;
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box-shadow: var(--focus-ring);
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}
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/* ===== HEADER ===== */
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.header {
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text-align: center;
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padding: var(--space-xl) 0;
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border-bottom: 3px solid var(--accent-orange);
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margin-bottom: var(--space-xl);
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}
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.header h1 {
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font-size: clamp(2rem, 5vw, 3rem);
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color: var(--accent-orange);
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margin-bottom: var(--space-md);
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text-transform: uppercase;
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letter-spacing: 0.05em;
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}
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.header p {
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color: var(--text-muted);
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font-size: 1.1rem;
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}
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/* ===== SEARCH BOX ===== */
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.search-container {
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background: var(--bg-elevated);
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padding: var(--space-lg);
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margin-bottom: var(--space-xl);
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border-left: 4px solid var(--accent-blue);
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position: sticky;
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top: 0;
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z-index: 99;
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}
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.search-box {
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position: relative;
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max-width: 600px;
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}
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.search-box label {
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display: block;
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color: var(--accent-yellow);
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margin-bottom: var(--space-sm);
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font-weight: bold;
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}
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.search-input {
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width: 100%;
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padding: var(--space-md);
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background: var(--bg-code);
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border: 2px solid var(--bg-card);
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color: var(--text-primary);
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font-size: 1rem;
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border-radius: 4px;
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transition: border-color var(--transition-fast);
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}
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.search-input:focus {
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border-color: var(--accent-orange);
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}
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.search-input::placeholder {
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color: var(--text-dim);
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}
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.search-clear {
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position: absolute;
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right: var(--space-md);
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top: 50%;
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background: transparent;
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border: none;
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color: var(--text-muted);
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cursor: pointer;
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font-size: 1.2rem;
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padding: var(--space-xs);
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display: none;
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}
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.search-clear:hover {
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color: var(--accent-red);
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}
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/* ===== NAVIGATION ===== */
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.nav {
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background: var(--bg-elevated);
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padding: var(--space-lg);
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margin-bottom: var(--space-xl);
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border-left: 4px solid var(--accent-green);
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position: sticky;
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top: 80px;
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z-index: 98;
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}
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.nav h2 {
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color: var(--accent-yellow);
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margin-bottom: var(--space-md);
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font-size: 1.2rem;
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}
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.nav ul {
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list-style: none;
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display: grid;
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grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
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gap: var(--space-sm);
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}
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.nav a {
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color: var(--text-primary);
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text-decoration: none;
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padding: var(--space-sm);
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display: block;
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border-left: 2px solid transparent;
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transition: all var(--transition-base);
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border-radius: 2px;
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}
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.nav a:hover,
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.nav a:focus {
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color: var(--accent-orange);
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border-left-color: var(--accent-orange);
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padding-left: var(--space-md);
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background: rgba(235, 117, 19, 0.1);
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}
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.nav a[aria-current="true"] {
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color: var(--accent-orange);
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border-left-color: var(--accent-orange);
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font-weight: bold;
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}
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/* ===== SECTIONS ===== */
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.section {
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margin-bottom: var(--space-xl);
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background: var(--bg-elevated);
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padding: var(--space-xl);
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border-left: 4px solid var(--accent-orange);
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scroll-margin-top: 100px;
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}
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.section h2 {
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color: var(--accent-orange);
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font-size: 1.8rem;
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margin-bottom: var(--space-lg);
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text-transform: uppercase;
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letter-spacing: 0.05em;
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}
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.section h3 {
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color: var(--accent-yellow);
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font-size: 1.3rem;
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margin-top: var(--space-lg);
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margin-bottom: var(--space-md);
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}
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.section h4 {
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color: var(--accent-green);
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font-size: 1.1rem;
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margin-top: var(--space-md);
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margin-bottom: var(--space-sm);
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}
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.section ul,
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.section ol {
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margin-left: var(--space-xl);
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margin-top: var(--space-md);
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margin-bottom: var(--space-md);
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}
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.section li {
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margin-bottom: var(--space-sm);
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color: var(--text-muted);
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}
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/* ===== COMMAND BLOCKS ===== */
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.cmd-block {
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background: var(--bg-card);
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padding: var(--space-lg);
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margin: var(--space-md) 0;
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border-left: 3px solid var(--accent-green);
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position: relative;
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}
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.cmd-title {
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color: var(--accent-yellow);
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font-weight: bold;
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margin-bottom: var(--space-sm);
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font-size: 1rem;
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}
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.cmd-desc {
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color: var(--text-muted);
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margin-bottom: var(--space-sm);
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font-size: 0.9rem;
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}
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.code-container {
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position: relative;
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}
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.code {
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background: var(--bg-code);
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padding: var(--space-md);
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border-radius: 4px;
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font-family: 'Courier New', 'Monaco', 'Menlo', monospace;
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color: var(--accent-yellow);
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overflow-x: auto;
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font-size: 0.9rem;
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border: 1px solid rgba(242, 198, 42, 0.2);
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display: block;
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white-space: pre;
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line-height: 1.5;
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}
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.copy-btn {
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position: absolute;
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top: var(--space-sm);
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right: var(--space-sm);
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background: var(--accent-orange);
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color: var(--bg-primary);
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border: none;
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padding: var(--space-xs) var(--space-md);
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cursor: pointer;
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font-size: 0.85rem;
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font-weight: bold;
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border-radius: 4px;
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transition: all var(--transition-fast);
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text-transform: uppercase;
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}
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.copy-btn:hover {
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background: var(--accent-yellow);
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transform: scale(1.05);
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}
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.copy-btn:active {
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transform: scale(0.95);
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}
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.copy-btn.copied {
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background: var(--accent-green);
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}
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.copy-btn.copied::after {
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content: ' ✓';
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}
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.code-inline {
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background: var(--bg-code);
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padding: 2px 6px;
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font-family: 'Courier New', 'Monaco', 'Menlo', monospace;
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color: var(--accent-yellow);
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font-size: 0.9em;
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border-radius: 2px;
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border: 1px solid rgba(242, 198, 42, 0.1);
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}
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/* ===== INFO BOXES ===== */
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.info-box {
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background: var(--bg-card);
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padding: var(--space-lg);
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margin: var(--space-md) 0;
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border-left: 4px solid var(--accent-green);
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border-radius: 4px;
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}
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.info-box.warning {
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border-left-color: var(--accent-orange);
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}
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.info-box.danger {
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border-left-color: var(--accent-red);
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}
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.info-box.concept {
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border-left-color: var(--accent-yellow);
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}
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.info-box-title {
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font-weight: bold;
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margin-bottom: var(--space-sm);
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font-size: 1.1rem;
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}
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.info-box.concept .info-box-title {
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color: var(--accent-yellow);
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}
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.info-box.warning .info-box-title {
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color: var(--accent-orange);
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}
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.info-box.danger .info-box-title {
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color: var(--accent-red);
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}
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/* ===== TABLES ===== */
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.comparison-table {
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width: 100%;
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border-collapse: collapse;
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margin: var(--space-md) 0;
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overflow-x: auto;
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display: block;
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}
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.comparison-table thead {
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display: table;
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width: 100%;
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table-layout: fixed;
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}
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.comparison-table tbody {
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display: table;
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width: 100%;
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table-layout: fixed;
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}
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.comparison-table th {
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background: var(--bg-code);
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color: var(--accent-yellow);
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padding: var(--space-md);
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text-align: left;
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border: 1px solid rgba(242, 198, 42, 0.2);
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font-weight: bold;
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}
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.comparison-table td {
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background: var(--bg-card);
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padding: var(--space-md);
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border: 1px solid rgba(242, 242, 188, 0.1);
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vertical-align: top;
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}
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.comparison-table tr:hover td {
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background: rgba(235, 117, 19, 0.05);
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}
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/* ===== FOOTER ===== */
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.footer {
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text-align: center;
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padding: var(--space-2xl) var(--space-lg);
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margin-top: var(--space-2xl);
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border-top: 3px solid var(--accent-orange);
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color: var(--text-muted);
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}
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.footer p {
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margin-bottom: var(--space-sm);
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}
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/* ===== BACK TO TOP BUTTON ===== */
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.back-to-top {
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position: fixed;
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bottom: var(--space-lg);
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right: var(--space-lg);
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background: var(--accent-orange);
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color: var(--bg-primary);
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width: 50px;
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height: 50px;
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border-radius: 50%;
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border: none;
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cursor: pointer;
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display: none;
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align-items: center;
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justify-content: center;
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font-size: 1.5rem;
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box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
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transition: all var(--transition-base);
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z-index: 100;
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}
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.back-to-top:hover {
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background: var(--accent-yellow);
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transform: translateY(-5px);
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}
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.back-to-top.visible {
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display: flex;
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}
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/* ===== RESPONSIVE DESIGN ===== */
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@media (max-width: 768px) {
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body {
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padding: var(--space-sm);
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}
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.nav ul {
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grid-template-columns: 1fr;
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}
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.nav {
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position: static;
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}
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.search-container {
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position: static;
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}
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.section {
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padding: var(--space-md);
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}
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.comparison-table {
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font-size: 0.85rem;
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}
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.comparison-table th,
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.comparison-table td {
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padding: var(--space-sm);
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}
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}
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/* ===== PRINT STYLES ===== */
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@media print {
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body {
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background: white;
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color: black;
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}
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.nav,
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.search-container,
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.back-to-top,
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.copy-btn {
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display: none !important;
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}
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.section {
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page-break-inside: avoid;
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border-left: 2px solid black;
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}
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.code {
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border: 1px solid #ccc;
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background: #f5f5f5;
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color: black;
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}
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a {
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color: black;
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text-decoration: underline;
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}
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}
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/* ===== HIGHLIGHT ANIMATION ===== */
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@keyframes highlight {
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0% {
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background: rgba(235, 117, 19, 0.3);
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}
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100% {
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background: transparent;
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}
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}
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.section.highlight {
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animation: highlight 2s ease-out;
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}
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</style>
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</head>
|
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<body>
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<!-- Skip Navigation Link -->
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<a href="#main-content" class="skip-nav">Skip to main content</a>
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<div class="container">
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<!-- HEADER -->
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<header class="header" role="banner">
|
|
<h1><span class="emoji">🐳</span> Docker Command Cheatsheet</h1>
|
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<p>Complete reference for Docker & Docker Compose</p>
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</header>
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<!-- SEARCH BOX -->
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<div class="search-container" role="search">
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<div class="search-box">
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<label for="search-input"><span class="emoji">🔍</span> Search Commands</label>
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<input
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type="search"
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id="search-input"
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class="search-input"
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placeholder="Type to filter commands and sections..."
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aria-label="Search commands and sections"
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>
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<button class="search-clear" aria-label="Clear search" title="Clear search">×</button>
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</div>
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<!-- NAVIGATION -->
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<nav class="nav" role="navigation" aria-label="Main navigation">
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<h2><span class="emoji">📑</span> Quick Navigation</h2>
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<ul>
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<li><a href="#basics">Basics</a></li>
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|
<li><a href="#compose">Docker Compose</a></li>
|
|
<li><a href="#lifecycle">Container Lifecycle</a></li>
|
|
<li><a href="#monitoring">Monitoring</a></li>
|
|
<li><a href="#volumes">Volumes & Data</a></li>
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<li><a href="#networks">Networks</a></li>
|
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<li><a href="#images">Images</a></li>
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<li><a href="#cleanup">Cleanup</a></li>
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<li><a href="#troubleshooting">Troubleshooting</a></li>
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<li><a href="#patterns">Common Patterns</a></li>
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<li><a href="#best-practices">Best Practices</a></li>
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<li><a href="#quick-ref">Quick Reference</a></li>
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</ul>
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</nav>
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<!-- MAIN CONTENT -->
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<main id="main-content">
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<!-- SECTION: BASICS -->
|
|
<section id="basics" class="section">
|
|
<h2><span class="emoji">📦</span> Docker Basics</h2>
|
|
|
|
<div class="info-box concept">
|
|
<div class="info-box-title"><span class="emoji">💡</span> What is Docker?</div>
|
|
<p>Docker packages applications and their dependencies into <strong>containers</strong> - lightweight, portable units that run consistently across different environments. Think of containers as self-contained boxes that have everything an application needs to run.</p>
|
|
</div>
|
|
|
|
<h3>Key Concepts</h3>
|
|
|
|
<div class="info-box">
|
|
<div class="info-box-title"><span class="emoji">🧩</span> Core Components</div>
|
|
<ul>
|
|
<li><strong>Image:</strong> A blueprint/template for containers (like a recipe)</li>
|
|
<li><strong>Container:</strong> A running instance of an image (like a meal made from the recipe)</li>
|
|
<li><strong>Volume:</strong> Persistent storage that survives container restarts</li>
|
|
<li><strong>Network:</strong> How containers communicate with each other and the outside world</li>
|
|
<li><strong>Docker Compose:</strong> Tool for defining multi-container applications</li>
|
|
</ul>
|
|
</div>
|
|
|
|
<h3>Basic Commands</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Check Docker Version</div>
|
|
<div class="cmd-desc">Verify Docker is installed and see version info</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker --version
|
|
docker version
|
|
docker info</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Test Docker Installation</div>
|
|
<div class="cmd-desc">Run a test container to verify everything works</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker run hello-world</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Pull an Image</div>
|
|
<div class="cmd-desc">Download an image from Docker Hub</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker pull ubuntu:22.04
|
|
docker pull nginx:latest</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Run a Container</div>
|
|
<div class="cmd-desc">Create and start a container from an image</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Basic run
|
|
docker run nginx
|
|
|
|
# Run with custom name
|
|
docker run --name my-nginx nginx
|
|
|
|
# Run in background (detached mode)
|
|
docker run -d nginx
|
|
|
|
# Run with port mapping
|
|
docker run -d -p 8080:80 nginx
|
|
|
|
# Run with environment variables
|
|
docker run -d -e "MY_VAR=value" nginx</pre>
|
|
</div>
|
|
</div>
|
|
</section>
|
|
|
|
<!-- SECTION: DOCKER COMPOSE -->
|
|
<section id="compose" class="section">
|
|
<h2><span class="emoji">🎼</span> Docker Compose</h2>
|
|
|
|
<div class="info-box concept">
|
|
<div class="info-box-title"><span class="emoji">💡</span> What is Docker Compose?</div>
|
|
<p>Docker Compose lets you define and run multi-container applications using a YAML file. Instead of managing each container separately, you describe your entire application stack in <code>docker-compose.yaml</code> and control everything with simple commands.</p>
|
|
</div>
|
|
|
|
<h3>Essential Compose Commands</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Start Services (Detached)</div>
|
|
<div class="cmd-desc">Start all services defined in docker-compose.yaml in the background</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker compose up -d</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Start Services (Foreground)</div>
|
|
<div class="cmd-desc">Start services and see logs in real-time (Ctrl+C to stop)</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker compose up</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Stop Services</div>
|
|
<div class="cmd-desc">Stop running containers but keep them for restart</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker compose stop</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Start Stopped Services</div>
|
|
<div class="cmd-desc">Restart previously stopped services</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker compose start</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Restart Services</div>
|
|
<div class="cmd-desc">Stop and start services in one command</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker compose restart
|
|
|
|
# Restart specific service
|
|
docker compose restart backend</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Stop and Remove Containers</div>
|
|
<div class="cmd-desc">Stop services and remove containers (volumes remain intact)</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker compose down</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Stop and Remove Everything (INCLUDING DATA!)</div>
|
|
<div class="cmd-desc">⚠️ Nuclear option - removes containers AND volumes (all data lost)</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker compose down -v</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="info-box danger">
|
|
<div class="info-box-title"><span class="emoji">🚨</span> Critical Warning</div>
|
|
<p><code>docker compose down -v</code> deletes ALL data stored in volumes. Only use this when you want a complete reset or are removing an application permanently.</p>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">View Service Status</div>
|
|
<div class="cmd-desc">See which containers are running</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker compose ps</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">View Logs</div>
|
|
<div class="cmd-desc">See output from all services</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># All logs
|
|
docker compose logs
|
|
|
|
# Follow logs (real-time)
|
|
docker compose logs -f
|
|
|
|
# Last 100 lines
|
|
docker compose logs --tail=100
|
|
|
|
# Specific service
|
|
docker compose logs backend
|
|
|
|
# Follow specific service
|
|
docker compose logs -f backend</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Pull Latest Images</div>
|
|
<div class="cmd-desc">Download updated versions of images</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker compose pull</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Build Images</div>
|
|
<div class="cmd-desc">Build custom images defined in docker-compose.yaml</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Build all images
|
|
docker compose build
|
|
|
|
# Build without cache
|
|
docker compose build --no-cache
|
|
|
|
# Build specific service
|
|
docker compose build backend</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Execute Command in Service</div>
|
|
<div class="cmd-desc">Run a command inside a running container</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Get shell access
|
|
docker compose exec backend bash
|
|
|
|
# Run single command
|
|
docker compose exec backend ls -la
|
|
|
|
# Run as different user
|
|
docker compose exec -u postgres postgres psql</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<h3>Compose File Validation</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Validate Configuration</div>
|
|
<div class="cmd-desc">Check if docker-compose.yaml is valid</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker compose config</pre>
|
|
</div>
|
|
</div>
|
|
</section>
|
|
|
|
<!-- SECTION: CONTAINER LIFECYCLE -->
|
|
<section id="lifecycle" class="section">
|
|
<h2><span class="emoji">🔄</span> Container Lifecycle Management</h2>
|
|
|
|
<h3>Starting & Stopping</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Start Container</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker start <container_name_or_id></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Stop Container</div>
|
|
<div class="cmd-desc">Gracefully stop (sends SIGTERM, waits, then SIGKILL)</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker stop <container_name_or_id>
|
|
|
|
# Stop with timeout (seconds)
|
|
docker stop -t 30 <container_name_or_id></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Restart Container</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker restart <container_name_or_id></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Kill Container</div>
|
|
<div class="cmd-desc">Force stop immediately (sends SIGKILL)</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker kill <container_name_or_id></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Remove Container</div>
|
|
<div class="cmd-desc">Delete stopped container</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Remove stopped container
|
|
docker rm <container_name_or_id>
|
|
|
|
# Force remove running container
|
|
docker rm -f <container_name_or_id>
|
|
|
|
# Remove with volumes
|
|
docker rm -v <container_name_or_id></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<h3>Listing & Inspection</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">List Running Containers</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker ps</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">List All Containers</div>
|
|
<div class="cmd-desc">Including stopped containers</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker ps -a</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Inspect Container</div>
|
|
<div class="cmd-desc">Get detailed information about a container</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker inspect <container_name_or_id>
|
|
|
|
# Get specific field
|
|
docker inspect --format='{{.State.Status}}' <container></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">View Container Logs</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># All logs
|
|
docker logs <container_name_or_id>
|
|
|
|
# Follow logs (real-time)
|
|
docker logs -f <container_name_or_id>
|
|
|
|
# Last 100 lines
|
|
docker logs --tail 100 <container_name_or_id>
|
|
|
|
# With timestamps
|
|
docker logs -t <container_name_or_id></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Execute Command in Running Container</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Interactive shell
|
|
docker exec -it <container_name> bash
|
|
|
|
# Or sh if bash not available
|
|
docker exec -it <container_name> sh
|
|
|
|
# Run single command
|
|
docker exec <container_name> ls -la /app
|
|
|
|
# As different user
|
|
docker exec -u postgres <container_name> psql</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Copy Files To/From Container</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Copy from container to host
|
|
docker cp <container>:/path/to/file /local/path
|
|
|
|
# Copy from host to container
|
|
docker cp /local/file <container>:/path/to/destination</pre>
|
|
</div>
|
|
</div>
|
|
</section>
|
|
|
|
<!-- SECTION: MONITORING -->
|
|
<section id="monitoring" class="section">
|
|
<h2><span class="emoji">📊</span> Monitoring & Performance</h2>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">View Resource Usage</div>
|
|
<div class="cmd-desc">Real-time stats for all running containers</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker stats
|
|
|
|
# Specific container
|
|
docker stats <container_name>
|
|
|
|
# No streaming (one-time)
|
|
docker stats --no-stream</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">View Running Processes</div>
|
|
<div class="cmd-desc">See processes inside container</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker top <container_name></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">View Port Mappings</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker port <container_name></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">System-Wide Information</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Disk usage
|
|
docker system df
|
|
|
|
# Detailed disk usage
|
|
docker system df -v
|
|
|
|
# System information
|
|
docker info</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Monitor Events</div>
|
|
<div class="cmd-desc">Real-time events from Docker daemon</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker events
|
|
|
|
# Filter by type
|
|
docker events --filter 'type=container'
|
|
|
|
# Filter by event
|
|
docker events --filter 'event=start'</pre>
|
|
</div>
|
|
</div>
|
|
</section>
|
|
|
|
<!-- SECTION: VOLUMES -->
|
|
<section id="volumes" class="section">
|
|
<h2><span class="emoji">💾</span> Volumes & Data Management</h2>
|
|
|
|
<div class="info-box concept">
|
|
<div class="info-box-title"><span class="emoji">💡</span> What are Volumes?</div>
|
|
<p>Volumes are Docker's way of persisting data beyond container lifecycles. When you delete a container, volumes remain intact unless explicitly removed. This is how your data survives updates and restarts.</p>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">List Volumes</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker volume ls</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Create Volume</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker volume create my_volume</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Inspect Volume</div>
|
|
<div class="cmd-desc">See volume details including mount point</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker volume inspect my_volume</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Remove Volume</div>
|
|
<div class="cmd-desc">⚠️ This deletes data permanently</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker volume rm my_volume
|
|
|
|
# Force remove
|
|
docker volume rm -f my_volume</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Backup Volume</div>
|
|
<div class="cmd-desc">Create a tarball backup of volume data</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker run --rm \
|
|
-v my_volume:/data \
|
|
-v $(pwd):/backup \
|
|
ubuntu tar czf /backup/backup.tar.gz /data</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Restore Volume</div>
|
|
<div class="cmd-desc">Restore from backup tarball</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker run --rm \
|
|
-v my_volume:/data \
|
|
-v $(pwd):/backup \
|
|
ubuntu tar xzf /backup/backup.tar.gz -C /</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<h3>Volume Usage in Containers</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Mount Volume to Container</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Named volume
|
|
docker run -d -v my_volume:/app/data nginx
|
|
|
|
# Bind mount (host directory)
|
|
docker run -d -v /host/path:/container/path nginx
|
|
|
|
# Read-only mount
|
|
docker run -d -v my_volume:/app/data:ro nginx</pre>
|
|
</div>
|
|
</div>
|
|
</section>
|
|
|
|
<!-- SECTION: NETWORKS -->
|
|
<section id="networks" class="section">
|
|
<h2><span class="emoji">🌐</span> Networks</h2>
|
|
|
|
<div class="info-box concept">
|
|
<div class="info-box-title"><span class="emoji">💡</span> Docker Networks</div>
|
|
<p>Networks allow containers to communicate with each other and the outside world. Docker creates isolated networks where containers can find each other by name.</p>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">List Networks</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker network ls</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Create Network</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Bridge network (default type)
|
|
docker network create my_network
|
|
|
|
# Custom subnet
|
|
docker network create --subnet=172.20.0.0/16 my_network</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Inspect Network</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker network inspect my_network</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Connect Container to Network</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker network connect my_network <container_name></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Disconnect Container from Network</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker network disconnect my_network <container_name></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Remove Network</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker network rm my_network</pre>
|
|
</div>
|
|
</div>
|
|
</section>
|
|
|
|
<!-- SECTION: IMAGES -->
|
|
<section id="images" class="section">
|
|
<h2><span class="emoji">📦</span> Image Management</h2>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">List Images</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker images
|
|
|
|
# With digests
|
|
docker images --digests
|
|
|
|
# Show all (including intermediate)
|
|
docker images -a</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Pull Image</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Latest version
|
|
docker pull nginx
|
|
|
|
# Specific version
|
|
docker pull nginx:1.25
|
|
|
|
# From different registry
|
|
docker pull ghcr.io/user/image:tag</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Search Images</div>
|
|
<div class="cmd-desc">Search Docker Hub</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker search nginx
|
|
|
|
# Limit results
|
|
docker search --limit 10 nginx</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Remove Image</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker rmi <image_name_or_id>
|
|
|
|
# Force remove
|
|
docker rmi -f <image_name_or_id>
|
|
|
|
# Remove multiple
|
|
docker rmi image1 image2 image3</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Tag Image</div>
|
|
<div class="cmd-desc">Create alias for image</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker tag source_image:tag target_image:tag
|
|
|
|
# Example
|
|
docker tag nginx:latest myregistry.com/nginx:v1</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Build Image from Dockerfile</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Build from current directory
|
|
docker build -t my-image:tag .
|
|
|
|
# Build without cache
|
|
docker build --no-cache -t my-image:tag .
|
|
|
|
# Build with build args
|
|
docker build --build-arg VERSION=1.0 -t my-image:tag .</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Save & Load Images</div>
|
|
<div class="cmd-desc">Export/import images as tar files</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Save image to file
|
|
docker save -o my-image.tar my-image:tag
|
|
|
|
# Load image from file
|
|
docker load -i my-image.tar</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">View Image History</div>
|
|
<div class="cmd-desc">See image layers and how it was built</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker history <image_name></pre>
|
|
</div>
|
|
</div>
|
|
</section>
|
|
|
|
<!-- SECTION: CLEANUP -->
|
|
<section id="cleanup" class="section">
|
|
<h2><span class="emoji">🧹</span> Cleanup & Maintenance</h2>
|
|
|
|
<div class="info-box warning">
|
|
<div class="info-box-title"><span class="emoji">⚠️</span> Before Cleanup</div>
|
|
<p>Always check what will be removed with <code>docker system df</code> first. Pruning operations are permanent!</p>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Remove Stopped Containers</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker container prune
|
|
|
|
# Without confirmation prompt
|
|
docker container prune -f</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Remove Unused Images</div>
|
|
<div class="cmd-desc">Removes dangling images (not tagged and not used)</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker image prune
|
|
|
|
# Remove ALL unused images
|
|
docker image prune -a</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Remove Unused Volumes</div>
|
|
<div class="cmd-desc">⚠️ This deletes data in unused volumes!</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker volume prune
|
|
|
|
# Without confirmation
|
|
docker volume prune -f</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Remove Unused Networks</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker network prune</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Complete System Cleanup</div>
|
|
<div class="cmd-desc">Remove all unused containers, networks, images (both dangling and unreferenced)</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Safe cleanup (keeps volumes)
|
|
docker system prune
|
|
|
|
# Aggressive cleanup (includes volumes)
|
|
docker system prune -a --volumes
|
|
|
|
# Without confirmation
|
|
docker system prune -af</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="info-box danger">
|
|
<div class="info-box-title"><span class="emoji">🚨</span> Nuclear Option</div>
|
|
<p><strong>Complete Docker Reset:</strong></p>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Stop all containers
|
|
docker stop $(docker ps -aq)
|
|
|
|
# Remove all containers
|
|
docker rm $(docker ps -aq)
|
|
|
|
# Remove all images
|
|
docker rmi $(docker images -q)
|
|
|
|
# Remove all volumes
|
|
docker volume rm $(docker volume ls -q)
|
|
|
|
# Remove all networks
|
|
docker network rm $(docker network ls -q)</pre>
|
|
</div>
|
|
<p><strong>This removes EVERYTHING. Only use if you want a complete fresh start!</strong></p>
|
|
</div>
|
|
</section>
|
|
|
|
<!-- SECTION: TROUBLESHOOTING -->
|
|
<section id="troubleshooting" class="section">
|
|
<h2><span class="emoji">🔧</span> Troubleshooting</h2>
|
|
|
|
<h3>Common Issues</h3>
|
|
|
|
<div class="info-box warning">
|
|
<div class="info-box-title"><span class="emoji">⚠️</span> Port Already in Use</div>
|
|
<p><strong>Error:</strong> <code>Error starting userland proxy: listen tcp 0.0.0.0:9001: bind: address already in use</code></p>
|
|
<p><strong>Solution:</strong></p>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Find what's using the port
|
|
sudo lsof -i :9001
|
|
sudo netstat -tulpn | grep :9001
|
|
|
|
# Kill the process or change port in docker-compose.yaml</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="info-box warning">
|
|
<div class="info-box-title"><span class="emoji">⚠️</span> Container Keeps Restarting</div>
|
|
<p><strong>Check logs for errors:</strong></p>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">docker logs --tail 100 <container_name></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="info-box warning">
|
|
<div class="info-box-title"><span class="emoji">⚠️</span> Out of Disk Space</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Check Docker disk usage
|
|
docker system df
|
|
|
|
# Clean up
|
|
docker system prune -a
|
|
docker volume prune</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="info-box warning">
|
|
<div class="info-box-title"><span class="emoji">⚠️</span> Permission Denied</div>
|
|
<p><strong>Error:</strong> <code>Got permission denied while trying to connect to the Docker daemon socket</code></p>
|
|
<p><strong>Solution:</strong></p>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Add user to docker group
|
|
sudo usermod -aG docker $USER
|
|
|
|
# Log out and back in for changes to take effect
|
|
# Or start new shell
|
|
newgrp docker</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="info-box warning">
|
|
<div class="info-box-title"><span class="emoji">⚠️</span> Network Issues</div>
|
|
<p><strong>Container can't reach internet or other containers</strong></p>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Restart Docker daemon
|
|
sudo systemctl restart docker
|
|
|
|
# Or recreate network
|
|
docker network rm <network_name>
|
|
docker network create <network_name></pre>
|
|
</div>
|
|
</div>
|
|
</section>
|
|
|
|
<!-- SECTION: COMMON PATTERNS -->
|
|
<section id="patterns" class="section">
|
|
<h2><span class="emoji">🎯</span> Common Patterns</h2>
|
|
|
|
<h3>Complete Application Reset</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Reset Application (Delete All Data)</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">cd ~/project
|
|
docker compose down -v # Remove containers + volumes
|
|
docker compose pull # Get latest images
|
|
docker compose up -d # Start fresh</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<h3>Update Application</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Update to Latest Version (Keep Data)</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">cd ~/project
|
|
docker compose pull # Download latest
|
|
docker compose up -d # Recreate containers with new images</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<h3>Backup and Restore</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Backup Before Changes</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Stop services
|
|
docker compose stop
|
|
|
|
# Backup volumes
|
|
docker run --rm -v project_data:/data -v $(pwd):/backup \
|
|
ubuntu tar czf /backup/backup-$(date +%Y%m%d).tar.gz /data
|
|
|
|
# Restart
|
|
docker compose start</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<h3>Development vs Production</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Multiple Compose Files</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Development
|
|
docker compose -f docker-compose.yaml -f docker-compose.dev.yaml up
|
|
|
|
# Production
|
|
docker compose -f docker-compose.yaml -f docker-compose.prod.yaml up -d</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<h3>Debugging Running Container</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Interactive Shell Access</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Get shell in running container
|
|
docker exec -it <container_name> bash
|
|
|
|
# Or sh if bash isn't available
|
|
docker exec -it <container_name> sh
|
|
|
|
# Run single command
|
|
docker exec <container_name> ls -la /app</pre>
|
|
</div>
|
|
</div>
|
|
</section>
|
|
|
|
<!-- SECTION: BEST PRACTICES -->
|
|
<section id="best-practices" class="section">
|
|
<h2><span class="emoji">✅</span> Best Practices</h2>
|
|
|
|
<h3>Project Organization</h3>
|
|
|
|
<div class="info-box">
|
|
<div class="info-box-title"><span class="emoji">📂</span> Directory Structure</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code">~/projects/
|
|
├── penpot/
|
|
│ ├── docker-compose.yaml
|
|
│ ├── .env
|
|
│ └── README.md
|
|
├── nextcloud/
|
|
│ ├── docker-compose.yaml
|
|
│ └── data/
|
|
└── ...</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<h3>Docker Compose Best Practices</h3>
|
|
|
|
<ul>
|
|
<li><strong>Always use named volumes</strong> instead of anonymous volumes</li>
|
|
<li><strong>Use .env files</strong> for sensitive data (passwords, API keys)</li>
|
|
<li><strong>Pin image versions</strong> - use <code>postgres:15</code> not <code>postgres:latest</code></li>
|
|
<li><strong>Add restart policies</strong> - <code>restart: unless-stopped</code></li>
|
|
<li><strong>Use depends_on</strong> to manage service startup order</li>
|
|
<li><strong>Document your setup</strong> in README.md</li>
|
|
<li><strong>Use health checks</strong> to ensure services are actually running</li>
|
|
<li><strong>Limit container resources</strong> (memory, CPU) in production</li>
|
|
</ul>
|
|
|
|
<h3>Maintenance Routine</h3>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Weekly Cleanup</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Remove unused images, containers, networks
|
|
docker system prune
|
|
|
|
# Remove unused volumes (be careful!)
|
|
docker volume prune</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="cmd-block">
|
|
<div class="cmd-title">Check Updates</div>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># Check for new images
|
|
docker compose pull
|
|
|
|
# View what would change
|
|
docker compose up --no-start
|
|
|
|
# Apply updates
|
|
docker compose up -d</pre>
|
|
</div>
|
|
</div>
|
|
|
|
<h3>Security Tips</h3>
|
|
|
|
<div class="info-box warning">
|
|
<div class="info-box-title"><span class="emoji">🔒</span> Security Checklist</div>
|
|
<ul>
|
|
<li>Never store passwords in docker-compose.yaml - use .env files</li>
|
|
<li>Add .env to .gitignore</li>
|
|
<li>Use official images from trusted sources</li>
|
|
<li>Keep images updated regularly</li>
|
|
<li>Don't run containers as root unless necessary</li>
|
|
<li>Limit container resources (memory, CPU) in production</li>
|
|
<li>Use read-only file systems where possible</li>
|
|
<li>Scan images for vulnerabilities with <code>docker scan</code></li>
|
|
</ul>
|
|
</div>
|
|
|
|
<h3>When Things Go Wrong</h3>
|
|
|
|
<div class="info-box danger">
|
|
<div class="info-box-title"><span class="emoji">🚨</span> Emergency Recovery</div>
|
|
<p><strong>If everything is broken:</strong></p>
|
|
<div class="code-container">
|
|
<button class="copy-btn" aria-label="Copy code">Copy</button>
|
|
<pre class="code"># 1. Stop everything
|
|
docker compose down
|
|
|
|
# 2. Check logs for errors
|
|
docker compose logs --tail=100
|
|
|
|
# 3. Try starting with verbose output
|
|
docker compose up
|
|
|
|
# 4. If still broken, nuclear option:
|
|
docker compose down -v
|
|
docker system prune -a
|
|
docker compose up -d</pre>
|
|
</div>
|
|
</div>
|
|
</section>
|
|
|
|
<!-- SECTION: QUICK REFERENCE -->
|
|
<section id="quick-ref" class="section">
|
|
<h2><span class="emoji">⚡</span> Quick Reference Card</h2>
|
|
|
|
<table class="comparison-table" role="table">
|
|
<thead>
|
|
<tr>
|
|
<th scope="col">Task</th>
|
|
<th scope="col">Command</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td>Start services</td>
|
|
<td><code>docker compose up -d</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>Stop services</td>
|
|
<td><code>docker compose stop</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>Restart services</td>
|
|
<td><code>docker compose restart</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>View logs</td>
|
|
<td><code>docker compose logs -f</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>Update images</td>
|
|
<td><code>docker compose pull && docker compose up -d</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>Remove containers (keep data)</td>
|
|
<td><code>docker compose down</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>Complete reset</td>
|
|
<td><code>docker compose down -v</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>Check status</td>
|
|
<td><code>docker compose ps</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>Clean unused resources</td>
|
|
<td><code>docker system prune</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>Shell into container</td>
|
|
<td><code>docker exec -it <name> bash</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>View resource usage</td>
|
|
<td><code>docker stats</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>Copy files to container</td>
|
|
<td><code>docker cp file <name>:/path</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>List all containers</td>
|
|
<td><code>docker ps -a</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>List all images</td>
|
|
<td><code>docker images</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td>List volumes</td>
|
|
<td><code>docker volume ls</code></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
</section>
|
|
|
|
</main>
|
|
|
|
<!-- FOOTER -->
|
|
<footer class="footer" role="contentinfo">
|
|
<p><strong><span class="emoji">🐳</span> Docker Cheatsheet</strong></p>
|
|
<p>Created: October 2025 | For Linux Mint 22.2 XFCE</p>
|
|
<p style="margin-top: var(--space-md); font-size: 0.9rem;">
|
|
Save this file locally for offline reference: <code>docker-cheatsheet-enhanced.html</code>
|
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</p>
|
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</footer>
|
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|
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</div>
|
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<!-- BACK TO TOP BUTTON -->
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<button class="back-to-top" aria-label="Back to top" title="Back to top">
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<span class="emoji">↑</span>
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</button>
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<script>
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document.querySelectorAll('.copy-btn').forEach(button => {
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try {
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await navigator.clipboard.writeText(code);
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// ===== SEARCH FUNCTIONALITY =====
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const searchInput = document.getElementById('search-input');
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const searchClear = document.querySelector('.search-clear');
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return;
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// Filter sections and content
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sections.forEach(section => {
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const sectionText = section.textContent.toLowerCase();
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const hasMatch = sectionText.includes(query);
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section.style.display = 'block';
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// Highlight matching command blocks
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const cmdBlocks = section.querySelectorAll('.cmd-block');
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cmdBlocks.forEach(block => {
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const blockText = block.textContent.toLowerCase();
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// ===== BACK TO TOP BUTTON =====
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const backToTop = document.querySelector('.back-to-top');
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window.addEventListener('scroll', function() {
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if (window.scrollY > 300) {
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backToTop.addEventListener('click', function() {
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window.scrollTo({
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// ===== ACTIVE SECTION HIGHLIGHTING =====
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// Update navigation
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document.querySelectorAll('.nav a').forEach(link => {
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link.setAttribute('aria-current', 'false');
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if (link.getAttribute('href') === `#${id}`) {
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link.setAttribute('aria-current', 'true');
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sections.forEach(section => {
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observer.observe(section);
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// ===== KEYBOARD SHORTCUTS =====
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document.addEventListener('keydown', function(e) {
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e.preventDefault();
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searchInput.focus();
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announcer.style.left = '-10000px';
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