Required changes dockerfile

Author: Gurram2001

app/app.py

@@ -7,5 +7,4 @@ def hello():
     return "Hello from DevOps on Azure VM with CI/CD!"
 
 if __name__ == '__main__':
-    app.run(host='0.0.0.0', port=5000)
-
+    app.run(host='0.0.0.0', port=5000)