update usage instructions

Author: bedroge

eessi_container.sh

@@ -97,8 +97,8 @@ display_help() {
   echo "                            container; can be given multiple times [default: not set]"
   echo "  -r | --repository CFG   - configuration file or identifier defining the"
   echo "                            repository to use; can be given multiple times;"
-  echo "                            CFG may include a suffix ',access={ro,rw}' to"
-  echo "                            overwrite the global access mode for this repository"
+  echo "                            CFG may include suffixes ',access={ro,rw},mode={bind,fuse}' to"
+  echo "                            overwrite the global access and/or mount mode for this repository"
   echo "                            [default: software.eessi.io via CVMFS config available"
   echo "                            via default container, see --container]"
   echo "  -u | --resume DIR/TGZ   - resume a previous run from a directory or tarball,"