version: "3.7"
services:
  web:
    build:
      context: .
      target: builder
    # Even though CMD is defined in the Dockerfile, we need to provide a CMD here
    # because we are using a compose entrypoint. See https://github.com/docker/compose/issues/3140
    command: rails server -p 3000 -b 0.0.0.0
    depends_on:
      - db
    environment:
      - DATABASE_URL=postgres://postgres:${POSTGRES_PASSWORD}@db:5432/pokemon_trade_dev
    ports:
      - ${WEB_HOST_PORT}:3000
    volumes:
      - type: bind
        source: .
        target: /app
    working_dir: /app

  db:
    environment:
      - POSTGRES_PASSWORD
    image: postgres:11.2-alpine
    ports:
      - ${DB_HOST_PORT}:5432
    volumes:
      - postgres-persisted-volume:/var/lib/postgresql/data

volumes:
  postgres-persisted-volume: