Initial Architecture

docker-compose.yml

version: '3'
services:
    cats-mongo:
        image: mongo:latest
        environment:
            MONGO_INITDB_ROOT_USERNAME: mongo
            MONGO_INITDB_ROOT_PASSWORD: mongo
            MONGO_INITDB_DATABASE: cats
        volumes:
            - cats_mongodb_data:/data/db
        command: mongod --auth
    dogs-mongo:
        image: mongo:latest
        environment:
            MONGO_INITDB_ROOT_USERNAME: mongo
            MONGO_INITDB_ROOT_PASSWORD: mongo
            MONGO_INITDB_DATABASE: dogs
        volumes:
            - dogs_mongodb_data:/data/db
        command: mongod --auth
    dogs-api:
        build:
            context: ./dogs-api
            dockerfile: .docker/Dockerfile
        volumes:
            - ./dogs-api/index.js:/www/index.js # mounts a volume to enable nodemon reload when changing files
            - ./dogs-api/lib:/www/lib # mounts a volume to enable nodemon reload when changing files
        depends_on:
            - dogs-mongo
    cats-api:
        build:
            context: ./cats-api
            dockerfile: .docker/Dockerfile
        volumes:
            - ./cats-api/index.js:/www/index.js # mounts a volume to enable nodemon reload when changing files
            - ./cats-api/lib:/www/lib # mounts a volume to enable nodemon reload when changing files
        depends_on:
            - cats-mongo
    cats-dogs-react:
        stdin_open: true # we want to run the react app on stdin mode because an issue with create-react-app scripts
        build:
            context: ./cats-dogs-react
            dockerfile: .docker/Dockerfile
        volumes:
            - ./cats-dogs-react/src:/www/src # mounts a volume to enable hot reload when changing files
            - ./cats-dogs-react/public:/www/public # mounts a volume to hot reload when changing files
volumes:
    cats_mongodb_data:
    dogs_mongodb_data: