Does 'attach' work?...
zypper in nemo-qml-plugin-dbus-qt5 sailfish-polkit-agent python3-base python3-gobject dbus-python3
/usr/bin/qxdisplay --wayland-socket-name "../../display/wayland-container-0"
/mnt/guest/start_desktop.sh 0
/mnt/guest/setup_desktop.sh
/mnt/guest/setups/debian.sh
could not connect to wayland server (EE) Fatal server error: (EE) Couldn't add screen (EE) xinit: giving up xinit: unable to connect to X server: Connection refused xinit: server error