app.py

@@ -1,5 +1,6 @@
 from flask import Flask
 from flask_restful import Api, Resource
+import os
 import pbrAyctCore.core as core
 
 app = Flask(__name__)
@@ -12,4 +13,5 @@ class Hello(Resource):
 api.add_resource(Hello, "/hello")
 
 if __name__ == "__main__":
-    app.run(debug=True)
+    port = int(os.environ.get('PORT', 5000))
+    app.run(host = '0.0.0.0', port = port)

heroku.yml

@@ -0,0 +1,3 @@
+build:
+  docker:
+    web: Dockerfile