GAE ERROR :- /bin/sh: 1: exec: gunicorn: not found
https://stackoverflow.com/questions/4795806624.12.2017 · A few changes and I was able to run your app in docker. In Twilio_Routing.py, change host to listen on 0.0.0.0 instead of 127.0.0.1.This is needed to to have the server available externally as well.; Since your app.yaml is already configured, you don't need to customize your Dockerfile as Google App Engine requires. Keep it as your own custom one.Here's what I used: