Docker Composer Skill

Overview

This skill helps you create efficient Docker configurations for development and production. Covers Dockerfiles, Docker Compose, multi-stage builds, networking, volumes, and container orchestration best practices.

Docker Philosophy

Container Principles

1. One process per container: Keep containers focused
2. Immutable infrastructure: Don't modify running containers
3. Stateless containers: Store state in volumes or external services
4. Minimal images: Smaller = faster + more secure

Best Practices

• DO: Use multi-stage builds for production
• DO: Pin specific versions for dependencies
• DO: Use .dockerignore to exclude unnecessary files
• DO: Run as non-root user