Poetry installation issue with GitHub submodules

[anuragbisht-turing]

Hi,
we were using poetry for dependency management for packages in a repository having GitHub submodule.
When we build the master package and try to create docker image out of it, it creates a problem by not actually copying the GitHub submodule files.
Does anybody know how to handle this and what's the best practice to use poetry with GitHub submodule.
Our module and submodule hierarchy looks like below.

main_module
*.py
main_module.toml
submodule
    submodule.toml
     *.py
     

Thanks