This is possible again thanks to
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9955 , and
this MR requires rebuilding all templates based docker images anyway,
so we can pull in the latest templates for free.
We need to exclude /dev/* when unpacking rootfs tarballs for the
arm_test image, since x86 container build jobs do not allow mknod
anymore with current templates. The baremetal test jobs have another
filesystem mounted on /dev anyway.
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9833>