Why is the running Docker container not available?

Question

Docker

sudo docker port 922ef99209fa
8080/tcp -> 0.0.0.0:49154
8080/tcp -> :::49154

run:

sudo docker run -d -P b_utilities

Something tells me I'm doing something wrong.
Accordingly, the site from localhost is not available.

conclusion:

spoiler

* Serving Flask app "app" (lazy loading)
* Environment: production
WARNING: This is a development server. Do not use it in a production deployment.
Use a production WSGI server instead.
* Debug mode: on
* Running on 127.0.0.1:5000 (Press CTRL+C to quit)
* Restarting with stat
* Debugger is active!
* Debugger PIN: 880-016-966