[Merge] ~dbungert/livecd-rootfs:lp-2055077 into livecd-rootfs:ubuntu/master

[Dan Bungert]

@mwhudson - so I adjusted this MP to put the logic in the hook script, which seems more tidy to me but maybe I can't assume PROJECT to be defined in that case.  Thoughts?

Test build fails, in the hook script, for lack of a PROJECT
https://launchpadlibrarian.net/719779605/buildlog_ubuntu_noble_amd64_test_BUILDING.txt.gz
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https://code.launchpad.net/~dbungert/livecd-rootfs/+git/livecd-rootfs/+merge/461665
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