docker-compose.yml

version: "3.7"
services:
  db:
    container_name: minimal-database
    restart: unless-stopped
    image: postgres
    env_file:
      - .env
    environment:
      POSTGRES_PASSWORD: $POSTGRES_PASSWORD
      POSTGRES_USER: $POSTGRES_USER
      POSTGRES_DB: $POSTGRES_DB
    volumes:
      - minimal-database-data:/var/lib/postgresql/data/ # persist data even if container shuts down
    ports:
      - "5432:5432"
  backend:
    container_name: minimal-backend
    restart: unless-stopped
    image: "node:14"
    depends_on:
      - db
    ports:
      - "80:5000"
    user: "node" # for ubuntu, use root
    working_dir: /home/node/app
    volumes:
      - ./:/home/node/app
    command: >
      sh -c "npm install && npm run db:migrate && npm run db:seed && npm start"
    env_file:
      - .env
    environment:
      #NODE_ENV: production
      DATABASE_URL: "db"
      DATABASE_PASSWORD: $POSTGRES_PASSWORD
      DATABASE_USER: $POSTGRES_USER
      DATABASE_NAME: $POSTGRES_DB
volumes:
  minimal-database-data: # named volumes can be managed easier using docker-compose