fix: remove sudo from cmd

src/containernet/containernet.py

@@ -55,11 +55,11 @@ def __init__(self, config: NestedConfig, yaml_base_path: str, oasis_workspace: s
 
     def __check_leaked_mounts(self):
         # check whether there are leaked mounts
-        cmd = "sudo mount | grep -i oasis | wc -l"
+        cmd = "mount -l | grep -i oasis | wc -l"
         result = os.popen(cmd).read()
         if int(result) > 0:
-            logging.warning("Error: there are leaked mounts. %s", result)
-            cmd = "sudo mount | grep -i 'oasis' | awk -F ' on | type ' '{print $2}' | xargs -I {} sudo umount \"{}\""
+            logging.warning("Warning: there are leaked mounts. %s", result)
+            cmd = "mount -l | grep -i 'oasis' | awk -F ' on | type ' '{print $2}' | xargs -I {} sudo umount \"{}\""
             os.system(cmd)
 
     def setUp(self) -> None: