Geany fills this niche, and is close to being feature complete. It could use help and attention as well, it unfortunately doesn't get enough imho. Also on github: https://github.com/geany/geany

I have a container I setup with XFCE and this awesome Windows 95 theme: https://github.com/grassmunk/Chicago95 Geany works perfectly inside it for a little retro dev environment. It looks and feels just like old Visual Studio versions, but I can code any modern thing I want.

xmonkee

What kind of container?

qbasic_forever

distrobox to manage the container: https://github.com/89luca89/distrobox Then just install XFCE and tiger VNC server inside it. Using VNC makes it easy to connect into a little isolated session that has its own theming, etc. vs. trying to send geany to my native X11/wayland server (which wouldn't theme it like windows 95).

You could also just run it in a browser window with a VNC HTML bridge, this would be a good base for that: https://github.com/accetto/ubuntu-vnc-xfce-g3

The easiest way to get Chicago95 setup is to run its GUI installer python script. I don't try to script it in a dockerfile or container setup.