docker-compose.yml

version: '3.9'
services:
  # database service (public image)
  database:
    image: postgres:latest
    networks:
      - pharma-net
    environment:
      - POSTGRES_PASSWORD=qp9CwVoyvXUNjquQCDXN5FYVWRcjE7iR
      - POSTGRES_USER=bfmnfopq
      - POSTGRES_DB=bfmnfopq 
    dns: 
      hostname=john.db.elephantsql.com
    env_file:
      - ./.env
  
  # backend service (public image)
  backend:
    image: node:latest
    working_dir: /usr/src/app
    volumes:
      - "./back-end:/usr/src/app"
    command: ["node", "app.js"]
    expose:
      - "8000"
  
  redis:
    image: redis
    networks:
      - pharma-net
  
  # frontend service (custom image)
  web:
    build: .
    volumes:
      - "./front-end:/usr/src/app"
    ports:
      - "3000:3000"
    networks:
      - pharma-net
    environment:
      - DB_HOST=database
      - REDIS_HOST=redis
    depends_on:
      - database
      - backend
      - redis
    command: ["./wait-for-it.sh", "database:5432", "--", "node", "index.js"]

networks:
  pharma-net: