PV cleanup best practices

[norman-zon]

Hi,

I want to try using PVs for Docker layer caching as described in the docs.
What directly came to mind is the problem of cleaning the PVs. Is there a best practice how to do clean-ups, like running docker prune regularly? How could I ensure to run a command on any single runner (especially when using auto-scaling)?
Or is there a better solution I'm not seeing right now?