version: '3'
services:
  db:
    image: postgres
    restart: always
    volumes:
      - db:/var/lib/postgresql/data
    environment:
      - POSTGRES_DB=nextcloud
      - POSTGRES_USER=nextcloud
    networks:
      - nextcloud
  app:
    image: nextcloud
    volumes:
      - nextcloud:/var/www/html
    restart: always
    environment: 
      - POSTGRES_HOST=db
      - POSTGRES_PASSWORD=hest
      - POSTGRES_DB=nextcloud
      - POSTGRES_USER=nextcloud
      - VIRTUAL_HOST=nextcloud.local
    depends_on:
      - db
    ports:
      - "80"
    networks:
      - nextcloud
      - external_services
volumes:
  nextcloud:
  db:

networks:
  external_services:
    external: true
  nextcloud: