Add option to ignore unavailable components

[pmeier]

Closes #332.

[aktech]

This looks good to me, I tried running locally and it worked for me.

I have a couple of nitpick comments, nothing blocking merge. I would also add a quick smoke test in the CI (docker run ..) after the docker image is built for end to end testing, but this is also not blocking, but really really nice to have as that's the quickest interface for users to quickly try ragna.

[pmeier]

I would also add a quick smoke test in the CI (docker run ..) after the docker image is built for end to end testing

We currently have

ragna/.github/workflows/docker.yml

Lines 107 to 108 in dbc7be7

	- name: Smoke test
	run: docker run ${{ steps.metadata.outputs.tagged-image-name }} --version

This of course is only a minimal check, but maybe what you are looking for?