docker-compose.yml

version: '3'

services:
  lb:
    image: haproxy
    ports:
      - "8080:8080"
    volumes:
      - ./haproxy:/usr/local/etc/haproxy
    depends_on:
      - chatapp1
      - chatapp2
      - chatapp3
      - chatapp4

  chatapp1:
    image: chatapp
    hostname: 'chatapp1'
    environment:
      - SERVER_NAME=chatAPP-1
      - REDIS_HOST=rds
      - MONGO=mongodb://mongo:27017/BChat
    depends_on: 
      - rds
      - mongo

  chatapp2:
    image: chatapp
    hostname: 'chatapp2'
    environment:
      - SERVER_NAME=chatAPP-2
      - REDIS_HOST=rds
      - MONGO=mongodb://mongo:27017/BChat
    depends_on: 
      - rds
      - mongo

  chatapp3:
    image: chatapp
    hostname: 'chatapp3'
    environment:
      - SERVER_NAME=chatAPP-3
      - REDIS_HOST=rds
      - MONGO=mongodb://mongo:27017/BChat
    depends_on: 
      - rds
      - mongo

  chatapp4:
    image: chatapp
    hostname: 'chatapp4'
    environment:
      - SERVER_NAME=chatAPP-4
      - REDIS_HOST=rds
      - MONGO=mongodb://mongo:27017/BChat
    depends_on: 
      - rds
      - mongo
  
  rds:
    image: redis

  mongo:
    image: mongo
    ports:
      - "27017:27017"