[docs] [serve] Extended Gradio notebook example for Ray Serve deployments

[maxpumperla]

Signed-off-by: Max Pumperla [email protected]

New Serve example showing how to hook into Gradio interfaces to easily visualise deployments.

Notebook preview

[maxpumperla]

@edoakes not entirely sure what you mean by an "integration" in #23390. Assuming we can figure out input and output types of Serve deployments and map them automatically to gr.inputs and gr.outputs, then that's actually easy. Otherwise, I think an example like this is all we can hope for.

[maxpumperla]

[simon-mo]

should we do myst instead?

[maxpumperla]

with myst the problem is that we don't get the Colab launch button (and binder is also strange in terms of integration). So I'd prefer ipynb, like in Tune.

[simon-mo]

content looks good. We can have exactly the same thing with Streamlit

[maxpumperla]

@simon-mo thanks. yeah, was thinking the same re: streamlit, which is actually more complex. Might be good for a more involved example.

[simon-mo]

I think there are two simple items blocking merge:

• ipynb_checkpoints should not be committed
• images should be in https://github.com/ray-project/images to reduce ray project repo size.
  please let me know if you need other help here.

[maxpumperla]

@simon-mo removed the checkpoints, forgot about that. Never heard about that image repo before. are we sure this is blocking?

[simon-mo]

merging masters to re-run the tests