version: "3.9"

services:
  postgres:
    image: postgres:16
    container_name: pg-demo
    restart: always
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
      POSTGRES_DB: demo
    volumes:
      - pgdata:/var/lib/postgresql/data
    ports:
      - "5432:5432"

  backend:
    build: .
    container_name: backend-demo
    restart: always
    depends_on:
      - postgres
    environment:
      DATABASE_URL: postgres://postgres:postgres@postgres:5432/demo
      PORT: 3000
    ports:
      - "3000:3000"

volumes:
  pgdata: