version: "3"
services:
  db:
    image: postgres
    ports:
      - "5432:5432"
    env_file:
      - .env
    volumes:
      - db_storage:/var/lib/postgresql
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U $POSTGRES_USER"]
      interval: 5s
      timeout: 5s
      retries: 5
    hostname: "db"

  app:
    build: .
    depends_on:
      db:
        condition: service_healthy
    links:
      - db
    ports:
      - "8000:8000"
    env_file:
      - .env

volumes:
  db_storage: