Node.js microservices on Google App Engine


I have to deploy three application on App Engine.
For this I want to user their microservices like things.

Suppose I have three module developed as different application. Once service is default, and other service is like service-1, service 2 microservice. After deploying main service is working but service-1, service-2 not working. I took help from
https://medium.com/this-dot-labs/node-js-microservices-on-google-app-engine-b1193497fb4b