CI: Docker build arm images as well...

[cpolzer]

Hello,

working on my ARM Macbook, i quickly discoverd that the sphinx-needs docker image is not usable , for example as a devcontainer in VSCode.

In context of the sphinx docker pipeline, i thought this might be the correct solution, but was not able to test it as the main branch build is not working out of the box within my fork.

Anyhow, I hope we somehow get enabled to consume arm based docker images.

Regards!

[danwos]

Thanks for the PR.
Have no access to an ARM system, but the change looks promising. So let's take it :)

[cpolzer]

@danwos Would we need to have some kind of dry run build (without push) for the docker images? Just for changes on our docker workflow and the dockerfiles maybe?

[danwos]

Not sure, as I'm not a docker expert and don't know what a good docker-testing setup should look like.
But I'm totally open to it and don't see any arguments why not.