docker-containerization
Docker Containerization
Write production-grade Dockerfiles with multi-stage builds, security hardening, and size optimization. Covers docker-compose for local development, image layer caching, health checks, and the patterns that separate a 2GB image from a 50MB one.
When to Use
Use for:
- Writing Dockerfiles from scratch or improving existing ones
- Multi-stage builds for compiled languages (Go, Rust, TypeScript)
- Docker Compose for local development environments
- Image size optimization (choosing base images, layer caching)
- Docker security scanning and hardening
- Development vs production Dockerfile patterns
- Debugging container build failures
- .dockerignore optimization
NOT for:
- Kubernetes deployment/orchestration (different domain)
- Cloud-specific container services (ECS, Cloud Run, App Runner)
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