Docker Compose pro development

Lokální development s docker-compose. Multi-kontejner setup, volumes a networking.

docker-compose.yml

version: '3.8'
services:
  app:
    build: .
    ports: ['3000:3000']
    volumes: ['./src:/app/src']  # Hot reload
    environment:
      DATABASE_URL: postgres://user:pass@db:5432/mydb
      REDIS_URL: redis://cache:6379
    depends_on: [db, cache]

  db:
    image: postgres:16-alpine
    environment:
      POSTGRES_USER: user
      POSTGRES_PASSWORD: pass
      POSTGRES_DB: mydb
    volumes: ['pgdata:/var/lib/postgresql/data']
    ports: ['5432:5432']

  cache:
    image: redis:7-alpine
    ports: ['6379:6379']

volumes:
  pgdata:

Příkazy

docker compose up -d     # Spusť na pozadí
docker compose logs -f   # Sleduj logy
docker compose down      # Zastav a smaž
docker compose ps        # Status

Shrnutí

Docker Compose = standard pro lokální development. Celý stack jedním příkazem.