MediaWiki Debian Installation

My Experience Installing MediaWiki 1.31 on Debian Bullseye (Buster)

This page will be under construction for some while (started 2020-2-14).

These are no complete installation instructions, but a description of some of the challenges and the possible solutions to set up mediawiki with the following goals:

1. As secure as possible, inclusive forward security,
2. Short URLs and VisualEditor + Math extension.

The server is separate, i.e. not on my home workstation, and plugged to the router. It's a fanless small machine, consuming between 5 and 15 Watts according to the product description. (Not being paid for advertising, I can recommend it at any time: fitlet2. See also the description at Phoronix.)

I am neither following a logical nor chronological path, but r