This container includes the default and simplest of Pylons webserver.
To make this useful you'll need to create your own Dockerfile and inherit this one. In your Dockerfile replace the files at /web/ with your own. Or alternative just delete that folder, include your code where you want it and then update CMD to run your code.
It exposes the default port 5000.
docker build -t pylons:0.1.4 .
Run and open port 5000 with (e.g.):
docker run --name pylons -p 5000:5000 -d pylons:0.1.4