how can i use multiple docker args in the clearml-task cli?

--docker_args '-v=some_dir:other_dir'  -----> a single value works fine
--docker_args '-v=some_dir:other_dir-v=some_dir:other_dir' -----> doesn't work well
--docker_args '-v=some_dir:other_dir,-v=some_dir:other_dir' -----> doesn't work well
--docker_args '-v=some_dir:other_dir;-v=some_dir:other_dir' -----> doesn't work well
--docker_args ['-v=some_dir:other_dir', '-v=some_dir:other_dir'] -----> doesn't work well

what is the proper syntax? and why isn't it documented? you are just mentioning "pass a single string"...
thanks for the help