Create root's $HOME, /root
Fixes
This creates root's $HOME, /root, with permissions as it was done in
ages past.
#!/bin/bash
hab pkg exec core/hab-backline mkdir -m 1777 -p /tmp
+hab pkg exec core/hab-backline mkdir -m 0750 -p /root
source /etc/habitat-studio/import_keys.sh
source /etc/habitat-studio/environment.sh
