Mention jupyter/docker stacks as an alternative to rocker/binder

[yuvipanda]

rocker/binder contains some Jupyter things, but the rocker project as a whole is not focused on Jupyter. This links them out to the jupyter/docker-stacks project, which is more Jupyter focused to serve users who are looking for more Jupyter focused container images. I think a lot of communities / users use a combination of Python (from various sources) and R (from the rocker project) already anyway.

I link to the rocker project from jupyter/docker-stacks since last month (jupyter/docker-stacks#2065), and one of the maintainers asked if I could provide a link back as well.

[eitsupi]

Thanks, but the link to Jupyter Docker Stacks has been present on a dedicated page for a few years.

website/images/external.md

Lines 10 to 19 in f8983df

	### [Jupyter Docker Stacks](https://jupyter-docker-stacks.readthedocs.io/en/latest/)
	The stack of Docker images by [Project Jupyter](https://jupyter.org/),
	based on Ubuntu, install packages from [conda-forge](https://conda-forge.org/),
	and configured to run Jupyter.
	It includes several images with the R package already installed,
	such as [`jupyter/r-notebook`](https://jupyter-docker-stacks.readthedocs.io/en/latest/using/selecting.html#jupyter-r-notebook)
	and [`jupyter/datascience-notebook`](https://jupyter-docker-stacks.readthedocs.io/en/latest/using/selecting.html#jupyter-datascience-notebook),
	so you can immediately run R on Jupyter.

Do we need to link to it from the binder page as well?

[yuvipanda]

@eitsupi ah, that's great it's already there. However, I do think it's also useful to link to it specifically from the binder page, as that's where someone most likely is going to be looking for things related to mixing R & Jupyter. Perhaps we can just link out to the external section (i.e. this link https://rocker-project.org/images/external.html#jupyter-docker-stacks) instead of straight to jupyter/docker-stacks?

[eitsupi]

Perhaps we can just link out to the external section (i.e. this link rocker-project.org/images/external.html#jupyter-docker-stacks) instead of straight to jupyter/docker-stacks?

That makes sense.

[yuvipanda]

@eitsupi done!

[eitsupi]

If I understand correctly, Quarto correctly converts relative links to HTML, so use relative links to md files here, not http.

[eitsupi]

Like this

website/images/external.md

Lines 55 to 60 in f8983df

	### [Mamba](https://github.com/mamba-org/mamba)
	A package manager to install various packages from [conda-forge](https://conda-forge.org/) and others.
	If you use Mamba on Linux for R, it may be easier to install packages,
	see also the [Extending images](../use/extending.md#conda-forge) page.

[jimgar]

Just stumbled across this open PR. I don't have skin in the game here, but it looks like you are both close to a close and approve. @yuvipanda, a little nudge - what do you think of the requested changes?