NO-JIRA: chore(tests/containers): detect socket for ryuk's use with rootless podman on macOS

[jiridanek]

Description

We should support rootless Podman on macOS.

The disadvantage is that it becomes necessary to stop pretending we work with Docker. While it is possible to send raw api query to libpod/info, it's best to just import the podman library and use the .info() method.

Either case, the result is untyped dict, so pydantic to the rescue.

• consider adding more logging for the macOS case

How Has This Been Tested?

Followed steps in README.md to run some tests.

• https://github.com/jiridanek/notebooks/actions/runs/13139973981
• https://github.com/jiridanek/notebooks/actions/runs/13152311827
• https://github.com/jiridanek/notebooks/actions/runs/13152432440

Merge criteria:

• The commits are squashed in a cohesive manner and have meaningful messages.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[jstourac]

I put one comment, otherwise LGTM. I can't test it myself, but I trust you it works as expected.

/lgtm

[openshift-ci]

New changes are detected. LGTM label has been removed.

[jiridanek]

Thanks for the checks. GHA tries linux with rootful podman, and I now also tried lima to check linux rootless podman. Should be good to to.
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jiridanek

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