fix: containers argument format in check_docker probe

perun/proxy/utils/nagios/check_dockers.py

@@ -29,7 +29,8 @@ def get_args():
         "-c",
         "--containers",
         required=True,
-        help='list of container names to check in following format: "[cont1, cont2]"',
+        help="list of container names to check in following"
+        "format: '['cont1', 'cont2']'",
     )
 
     return parser.parse_args()
@@ -38,6 +39,7 @@ def get_args():
 def main():
     args = get_args()
     containers_list = args.containers.replace(" ", "").strip("[]").split(",")
+    containers_list = [container_name.strip("'") for container_name in containers_list]
     containers_status = get_docker_states(containers_list)
 
     status = 0