I made two strategic mistakes. The first was reading about how to install a Python program using virtual environments until I had tears streaming down my face and finally it failed because I think I need the Qt 5.15.4 runtime installed and I didn't know how to proceed. Then I made the second mistake when I thought it was probably a good idea when I read "If you have Docker installed, the webapp can be run in a container…" It's been downloading and installing stuff ever since.