docker-composer.yml

version: '3'
services:
    rabbitmq:
      image: rabbitmq:management
      container_name: rabbitmq
      networks: 
        - desenv-local
      ports:
        - "5672:5672"
        - "15672:15672"
    redis:
      image: redis
      container_name: redis
      ports:
        - "6379:6379"
      networks: 
        - desenv-local
    mongodb:
      hostname: mongodb1
      image: mongo
      container_name: mongodb1
      networks:
        - desenv-local
      ports:
        - "27017:27017"
      entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0" ]
    mongodb2:
      hostname: mongodb2
      image: mongo
      container_name: mongodb2
      networks:
        - desenv-local
      ports:
        - "27018:27017"
      entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0" ]
    mongodb3:
      hostname: mongodb3
      image: mongo
      container_name: mongodb3
      networks:
        - desenv-local
      ports:
        - "27019:27017"
      entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0" ]
    dns-proxy:
      image: defreitas/dns-proxy-server
      hostname: dns.magedo
      ports:
        - 5380:5380
      volumes:
        - "/var/run/docker.sock:/var/run/docker.sock"
        - "/etc/resolv.conf:/etc/resolv.conf"
      environment:
        MG_LOG_LEVEL: ERROR
networks: 
    desenv-local:
        driver: bridge    

Initialize the replica set:
sudo docker exec -it mongodb1 mongo
And run:

config = {
	"_id" : "rs0",
	"members" : [
		{
			"_id" : 0,
			"host" : "mongodb1:27017"
		},
		{
			"_id" : 1,
			"host" : "mongodb2:27017"
		},
		{
			"_id" : 2,
			"host" : "mongodb3:27017"
		}
	]
};


rs.initiate(config);