CI platform matrix expansion

[a1cd]

This pull request updates the GitHub Actions CI workflows to add support for running jobs on both ubuntu-latest and ubuntu-24.04-arm platforms. This change ensures that all relevant workflows are tested on both standard and ARM-based Ubuntu environments, improving cross-platform compatibility.

[ruffsl]

Pardon me, given the commit history - is this a drive-by-AI PR?

I suppose we could check multi arch images build, but this CI more so just checks that templated versions are correct.

[a1cd]

Nope, I wrote that code. I think AI could probably have done correctly in one commit, but no I was testing it on my own actions in my repo. I just have a use case that requires a arm64 image, and your image only supports amd64 (aka x86_64) architectures.
AI did write the commit titles/descriptions but thats all.

[ruffsl]

but no I was testing it on my own actions in my repo.

Ah, can't blame you for pushed-based development with GitHub Actions. It is indeed tricky to test workflows locally.

I just have a use case that requires a arm64 image, and your image only supports amd64 (aka x86_64) architectures.

The Official Library images for ROS on DockerHub are indeed Multi-platform builds with arm64v8 support:

https://github.com/docker-library/official-images/blob/8d52c53042ed840fdc468d321c5248876bfc684e/library/ros#L76-L77

Are you instead wishing to use the osrf/ros images for the desktop tags? Indeed those are still only amd64.

[a1cd]

This image was the only one that fit my needs to my knowledge. I need a development environment for ros2 with full desktop support. I realize I may have not done that correctly with this pull request and the changes I made, I am not familiar with this build system. I tried making my own image last year but it was quite challenging and not worth the time sink, and I ran into some difficult and persistent errors.

[ruffsl]

A fair ask. @mikaelarguedas, this org has access to free arm builders for foss projects now, right?
I'll have to check if this'll just work^tm as expected for multi-platform registry manifests.