test_with_chroot.sh: do not require superuser privileges
Use mmdebstrap and podman to prevent using superuser privileges. Marking as draft because:
- vncdotool is buggy https://github.com/sibson/vncdotool/issues/267
- !8 (merged) is needed
- sway config needs to be amended to include a
conf.d
directory which then runsexec wayvnc 0.0.0.0 5910