Auto setup mongodb replica set by docker compose
Add the following config to /etc/hosts
127.0.0.1 mongodb1
127.0.0.1 mongodb2
127.0.0.1 mongodb3
Run docker compose
$ docker-compose up
Access http://localhost:8081/ to open Mongo Express
Connect to mongodb by URL: mongodb://mongodb1:27011,mongodb2:27012,mongodb3:27013/?replicaSet=rs0