docker-patterns
Docker and Docker Compose patterns for local development, multi-service orchestration, and container security.
- Covers multi-stage Dockerfiles with dev, build, and production targets; Docker Compose configuration for web app stacks with PostgreSQL, Redis, and Mailpit; and override files for environment-specific settings
- Includes service discovery via container networking, custom network isolation, and volume strategies (named volumes, bind mounts, anonymous volumes) for data persistence and hot reload
- Provides container hardening practices: non-root users, capability dropping, read-only filesystems, and secret management via environment variables and Docker secrets
- Offers debugging commands for logs, container inspection, network troubleshooting, and resource monitoring; documents anti-patterns like running as root, using latest tags, and storing data without volumes
Docker Patterns
Docker and Docker Compose best practices for containerized development.
When to Activate
- Setting up Docker Compose for local development
- Designing multi-container architectures
- Troubleshooting container networking or volume issues
- Reviewing Dockerfiles for security and size
- Migrating from local dev to containerized workflow
Docker Compose for Local Development
Standard Web App Stack
# docker-compose.yml
services:
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