F-Droid: Our build and release infrastructure, and upcoming updates

If you have an app on f-droid.org, you might have noticed that all
builds happen on a 5 year old Debian release: stretch. We are in
the midst of a big effort to upgrade to the latest bullseye release
right now. This is not just a simple apt-get upgrade, we
are also
taking this opportunity to overhaul the build process so that app
builds work with a relatively plain Debian install as the base
OS. We have to provide a platform to build thousands of apps, so we
cannot just upgrade the base image as often as we like.