docker-compose.yaml

version: '3.1'

services:
        mongo:
                image: mongo
                restart: always
                ports:
                        - 27017:27017
                environment:
                        # creating a database when container is initialised
                        MONGO_INITDB_DATABASE: defaultDB
                        MONGO_INITDB_ROOT_USERNAME: root
                        MONGO_INITDB_ROOT_PASSWORD: example
                volumes:
                        - mongo-db:/data/db
                        - mongo-configdb:/data/configdb
                        # create a new user admin password and give it readWrite access to defaultDB
                        - ./mongo/001_users.js:/docker-entrypoint-initdb.d/001_users.js:ro

        my-app:
                build:
                        context: .
                        dockerfile: Dockerfile
                depends_on:
                        - mongo
                volumes:
                        #Use the local app folder, but use a named volume for node_modules. This avoids conflicts with the local system.
                        - ./:/app
                ports:
                        - 8888:8888
                environment:
                        - NODE_ENV=production
                        - PORT=8888
                        - app_jwtPrivateKey=testPrivateKey
                        - app_mongodbUrl=mongodb://admin:password@mongo:27017/defaultDB
                command: "npm start"

volumes:
        #Configure shared volumes to be used in the services above.
        mongo-db:
        mongo-configdb: