nginx-loadbalancer

3 backend + 1 nginx

Launch

$ sudo docker-compose up --build

$ docker exec -it docker-nginx_backend1_1 /bin/bash

$ node index.js

$ docker exec -it docker-nginx_backend2_1 /bin/bash

$ node index.js

$ docker exec -it docker-nginx_backend3_1 /bin/bash

$ node index.js

$ curl http://localhost:8080

Will return hostname of the current backend server

You can open in browser http://localhost:8080 and see the hostname as well