Replace build-docker-image.sh with GHA actions

[Emilgardis]

See #609 (comment)

[Alexhuszagh]

Is this a good idea? It's quite useful to build locally to test image changes without having to push to a repository on every build.

[Alexhuszagh]

I think this has been correctly done with xtask, and having additional configurations with GHA actions, but also allowing local builds quite easily?

[Emilgardis]

with #849 this would be complete, it's probably the best way to support it. We could either supply the bake meta to a gh action, or directly invoke it