Docker Fundamentals

Twelve curated Docker topics from images/containers to production deployments, each with data-flow diagrams and three examples.

Topics

• Images vs Containers
• Dockerfile Basics
• Layers & Build Cache
• Multi-Stage Builds
• Docker Compose
• Networking, Ports & Volumes
• .dockerignore & Build Context
• Registries: Docker Hub, ECR, GHCR
• Healthchecks & Restart Policies
• Docker Security
• Debugging & Logs
• Production Deployment Patterns