add test for '--repository None' option

Author: bedroge

.github/workflows/test_eessi_container_script.yml

@@ -17,6 +17,7 @@ jobs:
         - help
         - listrepos_default
         - listrepos_custom
+        - no_cvmfs_mounts
         - run
         - shell
         - container
@@ -70,6 +71,14 @@ jobs:
                 ./eessi_container.sh --verbose --list-repos | tee ${outfile2}
                 grep "EESSI/20AB.CD" ${outfile2}
 
+              # test use of --repository None
+              elif [[ ${{matrix.SCRIPT_TEST}} == 'no_cvmfs_mount' ]]; then
+                outfile=out_nocvmfs.txt
+                ./eessi_container.sh --verbose --repository None --mode run mount | tee ${outfile}
+                # make sure that there are no CVMFS mounts in the container, i.e. mount does not have any lines line:
+                # cvmfs2 on /cvmfs/...
+                ! grep "^cvmfs" ${outfile}
+
               # test use of --mode run
               elif [[ ${{matrix.SCRIPT_TEST}} == 'run' ]]; then
                 outfile=out_run.txt