services:
  pg:
    image: postgres:alpine # Using a lightweight Postgres image
    environment:
      POSTGRES_DB: effect_cluster
      POSTGRES_USER: cluster
      POSTGRES_PASSWORD: cluster
    ports:
      - "5432:5432" # Map host port 5432 to container port 5432
    volumes:
      - db_data:/var/lib/postgresql/data # Persist data in a named volume
  redis:
    image: redis:alpine
    ports:
      - "6379:6379"

volumes:
  db_data: # Define the named volume