Comment 7 for bug 1980725

For Focal:

$ lxc launch images:ubuntu/focal ftemp
$ lxc shell ftemp
# enabling the -proposed repository!
$ apt update
$ apt install google-compute-engine-oslogin
$ apt install google-guest-agent

This installs version 20220622.00-0ubuntu2~20.04.0 without any problems and works like a charm. Additionally, the files that are shipped matches what was shipped before and should be shipped now as well:

/lib/systemd/system/google-guest-agent.service
/lib/systemd/system/google-shutdown-scripts.service
/lib/systemd/system/google-startup-scripts.service
/usr/bin/google_guest_agent
/usr/bin/google_metadata_script_runner
/usr/share/doc/google-guest-agent/changelog.Debian.gz
/usr/share/doc/google-guest-agent/copyright

...which is awesome because google_authorized_keys is not shipped and thus doubly confirms the fix for Focal.