@@ -0,0 +1,225 @@
+import os%0Afrom flask import Flask%0A%0Aapp = Flask(__name__)%0A%0A@app.route(%22/%22)%0Adef hello():%0A    return %22Hello world!%22%0A%0Aif __name__ == %22__main__%22:%0A    port = int(os.environ.get(%22PORT%22, 5000))%0A    app.run(host='0.0.0.0', port=port)%0A

Create app.py