Run test in a root-unwritable directory
Run test in a root-unwritable directory

This test needs to run in an unwritable directory,
but podman containers run as fake "root" and so
ignore chmod permissions. Use a directory on a read-only
filesystem, so that even root can't write to it.

salilab/saliweb,salilab/saliweb,salilab/saliweb,salilab/saliweb,salilab/saliweb