docker-compose.yml

services:

  mongo:
    image: mongo
    restart: always
    # once setup, dont expose ports; simply connect inter-service

    ports:
      - 27017:27017
    volumes:
      - mongodb_data:/data/db
    environment:
      # mongo runs on port 27017 by default
      MONGO_INITDB_ROOT_USERNAME: ${MONGO_INITDB_ROOT_USERNAME}
      MONGO_INITDB_ROOT_PASSWORD: ${MONGO_INITDB_ROOT_PASSWORD}
      # MONGO_INITDB_DATABASE: Oswego

  mongo-express:
    image: mongo-express
    profiles:
      - dev
    depends_on:
      - mongo
    restart: always
    ports:
      - 8081:8081
    environment:
      ME_CONFIG_MONGODB_ADMINUSERNAME: ${ME_CONFIG_MONGODB_ADMINUSERNAME}
      ME_CONFIG_MONGODB_ADMINPASSWORD: ${ME_CONFIG_MONGODB_ADMINPASSWORD}
      # REMEMBER mongo username/password is also passed below; additionally,
      # service name 'mongo' is used as host instead of localhost
      ME_CONFIG_MONGODB_URL: mongodb://${MONGO_INITDB_ROOT_USERNAME}:${MONGO_INITDB_ROOT_PASSWORD}@mongo:27017/
  # adding microservices is as simple as this!
  # just add build path to root of microservice containing a Dockerfile
  open-liberty:
    environment:
      MONGO_INITDB_ROOT_USERNAME: ${MONGO_INITDB_ROOT_USERNAME}
      MONGO_INITDB_ROOT_PASSWORD: ${MONGO_INITDB_ROOT_PASSWORD}
    build:
      args:
        - OPENJ9_SCC=${OPENJ9_SCC:-true}
      context: ./database-controller
      dockerfile: Dockerfile
    restart: always
    depends_on:
      - mongo
    volumes:
      - build_volume:/target
    ports:
      # alternative to allow user to specify port, but give a default:
      # ${MICROSERVICE_PORT:-9080}:${MICROSERVICE_PORT:-9080}
      - 9080:9080

volumes:
  # allows this volume to be created automatically if it does not already exist
  mongodb_data:
  build_volume:

    # secrets:
    #   mongodb_secrets:
    #     file: mongodb_secrets.txt