How often do the majority of people need to make these changes? With a well designed "self-contained black box" it should be possible to make the changes you suggested (web server and Python interpreter) pluggable, to some degree. There is always going to be a trade-off which has an impact on those with more specialized requirements.

> The install was a breeze because you practically installed a self contained black box.

Yes. Exactly what I wanted.

> What if you wanted to use Apache instead of nginx or a custom compiled Python interpreter or PyPy?

Then I would have read through the Docker config and figured out how to change it.

Then you go to documentation for a more manual installation and adjust it to your tastes.

Problem is there doesn't seem to be much documentation at a quick glance. At least for Zulip.

There seems to be a lot more information within the section of docs focused on developers like https://zulip.readthedocs.io/en/latest/development/setup-adv....