Question: How to set EXTRA_PIP_INSTALL_ARGS in Dockerfile created with BentoService.save()

[devFallingstar]

Hello teams,

What I did

I created custom class of bentoml.BentoService and trying to save and build with docker. Sample code is like below:

import bentoml

@bentoml.env(
    infer_pip_packages=False,
    requirements_txt_file="requirements.txt",
    pip_extra_index_url="abc.xyz",
    pip_trusted_host="bbc.xyz",
    docker_base_image=f"some.remote.docker.image",
)
class ExModel(bentoml.BentoService):
    (...)

and call save() function like below:

bento_service = ExModel()
saved_path = bento_service.save()

Question

In the saved_path, I found Dockerfile and I supposed there should be EXTRA_PIP_INSTALL_ARGS with --extra_index_url="abc.xyz" --trusted_host="bbc.xyz" but EXTRA_PIP_INSTALL_ARGS was empty.

I thought it would create EXTRA_PIP_INSTALL_ARGS automatically in Dockerfile since I added @bentoml.env annotation to the class. Did I wrong something? Or should I put another options to get proper Dockerfile?