virt-manager won't build in a container due to unbound dependency

[castrojo]

Describe the bug
Adding virt-manager to a container file results in a failed build due to this error from unbound:

Found file: "var/lib/unbound/root.key"
error: Found content in var
Error: building at STEP "RUN rpm-ostree install ..." 

To Reproduce
Please describe the steps needed to reproduce the bug:

1. Adding virt-manager to an rpm-ostree install stanza in a Containerfile fails both locally with podman and in a github runner.
2. Manually layering virt-manager works fine, this appears to be container workflow specific.

[travier]

It's from unbound-libs & unbound-anchor. Short term workaround: rm the key. Proper fix: Update the package to use a tmpfiles.d config to copy it on boot as needed from /usr.

[travier]

See also https://bugzilla.redhat.com/show_bug.cgi?id=2002689

[travier]

Is this still an issue in Fedora 41? This should probably be tracked in a bootc issue instead now: https://gitlab.com/fedora/bootc/tracker