Add .build-args-OS file to let specify build options

[hhorak]

Podman used to set some capabilities by default, but does not any more with version 4.4.0 and newer. These capabilities need to be set for being able to build micro images that install RPMs into an alternative path in the Dockerfile. Introducing .build-args-OS file means we will be able to specify some arguments to docker build command for each Dockerfile specifically, for example specify capabilities for the micro images.

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[hhorak]

[test]

[hhorak]

[test]

[frenzymadness]

If you don't mind me asking an offtopic question: why do micro images need to install RPMs to non-standard locations?

[phracek]

@hhorak Please rebase it and we can merge it.

[phracek]

phracek rebased.

[test]