docker-compose.yml

services:
  frontend:
    build: ./front
    depends_on:
      - backend
    volumes:
      - ./front:/app
    ports:
      - 3000:3000
  backend:
    build: ./back
    depends_on:
      - mongo1
      - mongo2
      - mongo3
    volumes:
      - ./back:/app
      - /app/node_modules
    ports:
      - 4000:4000

  mongo1:
    container_name: mongo1
    restart: always
    image: mongo
    links: 
      - mongo2
      - mongo3
    ports:
      - 27017:27017
    volumes:
      - mongodb1:/data/db
    entrypoint: [ "/usr/bin/mongod", "--replSet", "rsmongo", "--bind_ip_all"]
  
  mongo2:
    container_name: mongo2
    restart: always
    image: mongo
    ports:
      - 27020:27017
    volumes:
      - mongodb2:/data/db
    entrypoint: [ "/usr/bin/mongod", "--replSet", "rsmongo", "--bind_ip_all"]

  mongo3:
    container_name: mongo3
    restart: always
    image: mongo
    ports:
      - 27021:27017
    volumes:
      - mongodb3:/data/db
    entrypoint: [ "/usr/bin/mongod", "--replSet", "rsmongo", "--bind_ip_all"]

  mailhog:
    image: mailhog/mailhog
    logging:
      driver: 'none'  # disable saving logs
    ports:
      - 1025:1025 # smtp server
      - 8025:8025 # web ui

volumes:
  mongodb1:
  mongodb2:
  mongodb3: