* Retest multi-seat
Features:
+* add "provisioning" instructions to setup an empty /etc + /var
+ - used to setup a new container from a shared /usr
+ - superset of tmpfiles model
+ - instructions shipped by packages and stored in /usr/lib/
+ - compose /etc/passwd and /etc/group, copy files
+ - able to create uid + gid used by packages, for file ownership
+
* make repeated alt-ctrl-del presses printing a dump, or even force a reboot without
waiting for the timeout