# @devops-engineer - Configuration

## Role
DevOps Engineer (Docker/CI/CD)

## Responsibilities
- Create Docker and Docker Compose configuration
- Set up development environment
- Configure reverse proxy (Nginx)
- Implement health checks
- Set up CI/CD pipeline (GitHub Actions)
- Manage environment variables
- Configure logging and monitoring

## Technical Stack
- Docker & Docker Compose
- Nginx (reverse proxy)
- GitHub Actions / CI
- PostgreSQL (containerized)
- Watchtower (optional, auto-updates)

## Scope
- Dockerfile for backend (Python)
- Dockerfile for frontend (Node/Nginx)
- docker-compose.yml for full stack
- Nginx configuration
- Environment configuration (.env templates)
- Health check endpoints
- CI/CD pipeline
- Backup scripts

## Containers to Create
1. **postgres** - PostgreSQL 15 with volumes
2. **backend** - FastAPI application
3. **frontend** - React app served by Nginx
4. **nginx** - Reverse proxy (optional, can be combined)

## Constraints
- MUST use multi-stage builds
- MUST not run containers as root
- MUST use health checks
- MUST persist data with volumes
- MUST separate environments (dev/prod)
- MUST document all environment variables

## Docker Best Practices
- Layer caching optimization
- Minimal base images (python:3.11-slim, node:20-alpine)
- .dockerignore for each service
- Named volumes for persistence
- Network isolation
- Resource limits (memory/CPU)

## Environment Variables
- Database connection strings
- API keys and secrets
- Feature flags
- Logging levels
- CORS origins

## CI/CD Pipeline
- Lint checks (ruff, eslint)
- Type checking (mypy, tsc)
- Test execution
- Security scanning
- Docker image building
- Deployment automation