Simple config to Dockerfile and docker-compose.yml

docker-compose-dev.yml

version: "3.9"
services:
  animals-app:
    build:
      context: .
      dockerfile: Dockerfile.dev
    ports:
      - "3000:3000"
    links:
      - animals-db
    volumes:
      - .:/home/app
  animals-db:
    image: mongo
    ports:
      - "3005:27017"
    environment:
      - MONGO_INITDB_ROOT_USERNAME=luis
      - MONGO_INITDB_ROOT_PASSWORD=2002
    volumes:
      - mongo-data:/data/db
      # mysql => /var/lib/mysql
      # postgres => /var/lib/postgresql/data

volumes:
  mongo-data:

docker-compose.yml

version: "3.9"
services:
  animals-app:
    build: .
    ports:
      - "3000:3000"
    links:
      - animals-db
  animals-db:
    image: mongo
    ports:
      - "3005:27017"
    environment:
      - MONGO_INITDB_ROOT_USERNAME=luis
      - MONGO_INITDB_ROOT_PASSWORD=2002
    volumes:
      - mongo-data:/data/db
      # mysql => /var/lib/mysql
      # postgres => /var/lib/postgresql/data

volumes:
  mongo-data:

Dockerfile

FROM node:18

RUN mkdir -p /home/app

COPY . /home/app

EXPOSE 3000

CMD ["node", "/home/app/index.js" ]

Dockerfile.dev

FROM node:18

RUN npm i -g nodemon
RUN mkdir -p /home/app

WORKDIR /home/app

EXPOSE 3000

CMD ["nodemon", "index.js" ]