docker-config.yml MongoDB replica set

docker-config.yml

version: "3"
services:
  mongo1:
    container_name: cf_mongo1
    image: mongo:latest
    ports:
      - "127.0.0.1:37001:27017"
    networks:
      - backend
    command: |
      /bin/bash -c "
      set -e
      (mongod --replSet "rs" --bind_ip localhost,mongo1) &
      while ! mongo --host mongo1:27017 --eval 'db.stats()'; do sleep 1 ; done
      while ! mongo --host mongo2:27017 --eval 'db.stats()'; do sleep 1 ; done
      while ! mongo --host mongo3:27017 --eval 'db.stats()'; do sleep 1 ; done
      mongo --eval 'rs.initiate()'
      mongo --eval 'rs.add(\"mongo2\")'
      mongo --eval 'rs.add(\"mongo3\")'
      mongo --eval 'rs.config()'
      wait
      "
  mongo2:
    container_name: cf_mongo2
    image: mongo:latest
    ports:
      - "127.0.0.1:37002:27017"
    networks:
      - backend
    command: mongod --replSet "rs" --bind_ip localhost,mongo2

  mongo3:
    container_name: cf_mongo3
    image: mongo:latest
    ports:
      - "127.0.0.1:37003:27017"
    networks:
      - backend
    command: mongod --replSet "rs" --bind_ip localhost,mongo3

networks:
  backend: