visualizer: Fully working demo - example in repository doesn't work

Hi again!

I’ve been trying for a few days to just get a basic demo up and running. I was first trying with a Singularity container, and have defaulted back to using the Dockerfile you have under “demo.” I am following the instructions and for the life of me I can’t get it working. The start command seems to hang:

$ docker run -p 127.0.0.1:8081:80 -ti paraview ws://localhost:8081
Starting/Restarting Apache webserver
 * Restarting Apache httpd web server apache2                                   AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.17.0.2. Set the 'ServerName' directive globally to suppress this message
                                                                         [ OK ]
Starting the wslink launcher

Then the mapping to 127.0.0.1 doesn’t work, but I can go to 172.17.0.2, but the links are all dead (permission denied)

Then I browse to visualizer, for example, and it waits for a bit that it’s loading paraview

but ultimately fails:

Can you please provide a clean set of commands to reproduce your working demo? Thank you!