CVAT: How to install from submodules for serverless

Question

I want to make a serverless function. The main logic has been encapsulated in a submodule repo, the model_handler.py will just call the content of the submodule.

location:

CVAT
|----serverless
      |------------modules
                     |-------------------some-foo

in function-gpu.yaml I added following:

        - Kind: ADD
          value: ./modules/some-foo /home/user/
        - kind: RUN
          value: pip3 install /home/user/modules/some-foo 

But the ./modules/some-foo cannot be found while running serverless/deploy_gpu.sh ie.

Any idea, thank you!