bib: check /var/lib/containers/storage when using "--local" (HMS-3792)

[mvo5]

Ensure to error early when the user is not passing the required

-v /var/lib/containers/storage:/var/lib/containers/storage

when doing a local build.

[edit: I looked again and the loop is so simple that I feel the integration test is enough]

[kingsleyzissou]

So I tried something here 56ce13b n #259 😆 but this is probably more robust

[mvo5]

So I tried something here 56ce13b n #259 😆 but this is probably more robust

Thanks! Yeah, the trouble is that this is always a mount point, with -v it will point to the host without it will be an overlayfs inside the container storage.