docker-compose-mongo.yml

version: "3.7"

services:
  database:
  mongo:
    image: mongo
    restart: always
    environment:
      MONGO_INITDB_ROOT_USERNAME: root
      MONGO_INITDB_ROOT_PASSWORD: password
    volumes:
      - db_data:/data/db

  app:
    depends_on:
      - database
    environment:
      - DATABASE_URL=mongodb://root:password@database:27017/

volumes:
  db_data: