docker-compose.yml

#sets up two services named "api" and "postgres"
#uses a volume named "my_dbdata" for storing the database data. Even if the container and image are deleted, the volume will remain unless explicitly deleted using docker volume rm


version: "3"
services:
  api:
    build: .
    depends_on:
      - postgres
    environment:
      DATABASE_URL: postgres://user:pass@postgres:5432/db
      PORT: 3000
    ports:
      - "3000:3000"
    volumes:
      - ./app.js:/app/app.js
      - ./queries.js:/app/queries.js
      - ./README.md:/app/README.md
      
  postgres:
    image: postgres:11
    environment:
      POSTGRES_USER: user
      POSTGRES_PASSWORD: pass
      POSTGRES_DB: db
    volumes:
      - my_dbdata:/var/lib/postgresql/data
      - ./init.sql:/docker-entrypoint-initdb.d/init.sql
    restart: on-failure

volumes:
  my_dbdata: