Add QEMU to build action

[mpolitze]

Overlooked that QEMU needs to be set up for multi-platform builds... sorry.

Should fix issue in #54 (comment)

[koppor]

Fixes #52

[koppor]

@mpolitze Thank you for the quick follow-up. I will merge - let's see what the pipeline says ^^

Current build hang after 30 mins, I try to restart - https://github.com/dante-ev/docker-texlive/actions/runs/13303938965/job/37150580864

Update My web browser did not show everything at the beinning. It hang at

#22 exporting to image
#22 exporting layers

I just need to be patient...

[koppor]

Side track: Maybe this long build times prevent #56 being finished... - Maybe, #51 will never happen in a clean way.

[mpolitze]

@koppor Tanks for trying this out... I will need to get some time, to create a better testing environment in my fork to track down the issue.

I don't want to slow stuff down. Maybe for now just comment out/remove the QEMU and buildx steps and remove the arm64 plattform (https://github.com/dante-ev/docker-texlive/blob/main/.github/workflows/publish.yml#L48-L58).

Sorry for the struggles.

[koppor]

@mpolitze I can provide you full access 😅 Full trust ahead 😅

[koppor]

The slow down is IMHO not (!) because of your changes! 😅😇

[mpolitze]

I still fear it was my change. After monitoring some builds: the emulated arm64 build is very slow in installing dependencies via apt-get. So far I have done that only for much smaller containers where this was not so much of an issue.

So, first analysis shows: the slow packages seem to be slow reproducibly. Some examples:

• Setting up wget ~100 seconds 1 and 2
• Processing triggers for libc-bin after Inkscape ~100 seconds 1 and 2
• Setting up libtest-log-dispatch-perl ~100 seconds 1 and 2

I assume they do some compiling or other CPU intensive work that is slow on QEMU. What slightly puzzles me is that all delays I have observed are always pretty close to 100 seconds... that seems more like a timeout than a coincidence.

Just throwing out the arm64 platform in the drastically speeds up the process - the amd64 image builds in about 2 minutes.

I will take a look if things can be speeded up - both my Mac and Raspberry Pi a waiting for an arm64 image 😢

[koppor]

For font caching, we need 10 minutes? Thus, I would not need to worry, because of 2 minutes

However, for sure, we could use the native ARM runners: https://github.blog/changelog/2025-01-16-linux-arm64-hosted-runners-now-available-for-free-in-public-repositories-public-preview/

(I currently have no experience with them)