Using serverless + azure + flask

I am testing serverless and azure. I have written a simple flask app that displays hello world. When I check the url here
https://serverless-flask-test-azure.azurewebsites.net/
it just displays that my app has been deployed. (I wanted to see hello world :frowning: )

Code to the app can be found here

Could someone please guide on how to successfully deploy a flask app on azure.

I am also facing the same issue even now. Can anyone help.
I see that the function created is on Windows and not Linux( this supports Python).
Is there any variable which can be specified in serverless.yml to create a linux based functions app.