built-in Linux image changes

Author: cephalin

Dockerfile

@@ -1,8 +1,8 @@
 # Python Flask app on Azure Web App for Containers
 
-This is a minimal sample app that demonstrates how to run a Python Flask application on Azure Web App for Containers.
+This is a minimal sample app that demonstrates how to run a Python Flask application on Azure App Service on Linux.
 
-For more information, please see the [Python on App Service Quickstart docs](https://docs.microsoft.com/en-us/azure/app-service/containers/quickstart-python).
+For more information, please see the [Python on App Service quickstart](https://docs.microsoft.com/en-us/azure/app-service/containers/quickstart-python).
 
 # Contributing
 

README.md

@@ -0,0 +1,6 @@
+from flask import Flask
+app = Flask(__name__)
+
+@app.route("/")
+def hello():
+    return "Hello World!"

app/main.py

@@ -0,0 +1,6 @@
+click==6.7
+Flask==1.0.2
+itsdangerous==0.24
+Jinja2==2.10
+MarkupSafe==1.0
+Werkzeug==0.14.1