Add the Protobuf libaray, headers, compiler and Python pacakge.

This reverts commit 2515a8ea.

Didn't help.

I think it's fixed in toolbox, but didn't make to the 0.0.99 release.

Based on https://github.com/containers/toolbox/pull/371/files.

It used be imported via the docker template, but now it's explicit.

- Push images to the Shore image registry.
- Update template name.

Tag a few of them. Add reg.

For getting secrets out of Keepass on the command line.

Per https://github.com/containers/toolbox/#image-requirements.

I think it's causing to build to fail (only reason it seems).

The Docker project one. Also, address some warnings.

Now I should be able to access services from different containers.

They have dependnecy requirements that conflict with other packages.
Weird considering they've been recently updates yet still require older
versions.

Needed for OSTree and Azafea.

I'm not sure why that's better, but I remember checking it out and
deciding on that.

Things that don't come easily packaged, use the Makefile from rcfiles.

Not sure how I'll manage Virtualbox inside the container.

- Disable the Docker pre-commit checks only in CI (the issue doesn't
happen locally).
- Pull images during the build stage.

- User namespace.
- Install podman.