#6-fix hostname and port error for flask app

data-retrival-service/main.py

@@ -47,6 +47,6 @@ def get_image():
 
 # Press the green button in the gutter to run the script.
 if __name__ == '__main__':
-    app.run()
+    app.run(host='0.0.0.0', port=8000)
 
 # See PyCharm help at https://www.jetbrains.com/help/pycharm/