[ci] update target distributions

[gquintard]

remove ubuntu:focal, add debian:trixie and almalinux:10

closes: #4407

[gquintard]

setting this to draft, there are some dependency shenanigans to pull

[gquintard]

@dridi , I think I need you on this one. On alamalinux:10, even after installing epel-release and enabling crb, I'm still not finding jemalloc-devel.

I can use dnf -y install https://extras.getpagespeed.com/release-latest.rpm to get a repository that has it, but it doesn't seem right

[neufeind]

I found that EPEL packages jemalloc for 10.1 and 10.2 (the stream-releases) but it is not there for 10.0 or 10z (the stable point-releases like RHEL 10, Rocky, Alma). Manually picking the jemalloc-package from the EPEL 10.1-repo works as a workaround - but that's of course also not ideal.
I've requested adding it to EPEL 10.0 / 10z: https://bugzilla.redhat.com/show_bug.cgi?id=2405317

[neufeind]

If building for trixie (current Debian stable) already works, maybe should we split this in two patches to at least get Debian-builds up-to-date as a first step (and maybe trigger a build for it?)?

[HackedMonkey]

Any updates on this? Especially Debian Trixie as this has been out for a while now.

[gquintard]

I'm looking at this soon, but the goal is to migrate to https://github.com/varnish/all-packager , which is already producing packages (notably for almalinux:10 and debian:trixie)

You can find the instructions here: https://varnish.org/docs/install-guide/

[gquintard]

this can go in now that 10.1 is out