[Interest] Qt Docker images for Windows

[Florian Scheel]

Hello all,

TL;DR: I created a Windows Docker image containing with Qt open-source
installations at https://hub.docker.com/r/keneanung/qt-windows

The longer story:
The project I participate in (https://github.com/Mudlet/Mudlet) tries
to make itself a bit less dependent on CI service providers and their
installed software after having dependencies changed on relatively
short notice. So we started building Docker images with the software
required to compile the project.

After some research, I didn't find any images for Windows that
included Qt, the preferred method seems to be cross-compiling, and
thus I created a version for ourselves to use.

Enjoy,
Florian