This solution still works fine

[aki-k]

[Does not work anymore!]

I have no idea why that text has been added to the description.
This script still works fine. The only thing I change is basic.target to
multi-user.target in both enter-systemd-namespace and start-systemd-namespace

[aki-k]

It still works for Ubuntu 20.04 but not for Ubuntu 22.04.

[aki-k]

This fix works with Ubuntu 22.04:

#36 (comment)

The place for the fix is at the end of enter-systemd-namespace.