Awesome thanks! I also figured out it a few hours ago. 

Hi, did you solve it? I have a same issue right now, app config push does not work...

Nope, anyone replied yet, I still need to find how to do it. 

I am trying to deploy to EC2 instance too.. Did you solve your issue?

I am developing shopify public app. From this app node server, I can communicate to shopify API and also send requests (POST/GET) to my external server (Node express app deployed to AWS). However, I want to send a request from my external server to t...