Docker-streamlit 2020: streamlit launches but visiting the URLS leads to nothing

Port is exposed
Configuration file is written and sensed
Docker completes build
streamlit launches but visiting the URLS leads to nothing.

I am developing this dockerfile
Here are some screen shots:


Any help would be much appreciated :slight_smile:

I have noticed many related but dated and inconclusive posts to mine. I am guessing the reason for the confusion is its still highly experimental getting docker and streamlit packages and configuration to agree.

Even an existing minimal working container needed modification to work this is the best I have got so far.

Now I need to know how to merge in the above Docker contents into the minimal working example.