[Feature Request]: Allow package extras to be installed for the black feature

Requested Feature

Currently, there is no option to install extras for the black feature (and possibly others). For example, if I want to format Jupyter notebooks, I can run pip install black[jupyter] to have the Jupyter extra.

I would like the option to do the following in my devcontainer.json file:

    // Features to add to the dev container. More info: https://containers.dev/features.
    "features": {
        "ghcr.io/devcontainers-contrib/features/black:2": {
           "extras": {"jupyter"}
        }
    }

It would be nice to have this idea of extras extended to other pip-installable packages that support them.

devcontainers-contrib / features

[Feature Request]: Allow package extras to be installed for the black feature #504

Requested Feature