Docker Compose File For Mongo Change Stream Sockets Set Up

mongo-change-stream-compose.yml

version: "3.7"

services:
  front:
    build: ./front
    volumes: 
      - ${PWD}/front/src:/project
    ports: 
      - 8080:80
    networks:
      - app
    restart: on-failure
  back:
    build: ./back
    volumes: 
      - ${PWD}/back/src:/project
    ports: 
      - 8082:80
    networks:
      - app
      - mongo
    restart: on-failure
  sockets:
    build: ./sockets
    volumes: 
      - ${PWD}/sockets/src:/project
    ports: 
      - 8083:80
    networks:
      - app
      - mongo
    restart: on-failure
  redis:
    image: redis:latest
    networks:
      - app
    restart: on-failure
  mongo_1:
    image: mongo:4
    command: mongod --replSet appReplicaSet
    volumes:
      - ${PWD}/mongo/rs_config.js:/docker-entrypoint-initdb.d/rs_config.js
    networks:
      - mongo
    extra_hosts: 
      - "mongo_1:127.0.0.1"
    restart: on-failure
  mongo_2:
    image: mongo:4
    command: mongod --replSet appReplicaSet
    networks:
      - mongo
    restart: on-failure
  mongo_3:
    image: mongo:4
    command: mongod --replSet appReplicaSet
    networks:
      - mongo
    restart: on-failure
  mongo_express:
    image: mongo-express
    environment:
      ME_CONFIG_MONGODB_SERVER: "mongo_1,mongo_2,mongo3"
    ports:
      - 8081:8081
    networks:
      - mongo
    restart: on-failure

networks:
  app:
  mongo: