Use pangeo/pangeo-notebook as base image

[yuvipanda]

Curated upstream image! But it doesn't have R, so we
add it. Our environment.yml file only adds packages that
aren't in the base image.

Ref #3
Closes #19
Closes #22

[choldgraf]

🤩

[choldgraf]

Is there anything holding this one back? Checks seem green, no comments on things to resolve?

[GeorgianaElena]

Hey @choldgraf! This is already deployed on the staging hubs. We just need to wait a little so that folks test it a bit to make sure everything works before deploying it to prod.

[choldgraf]

Ah right - do the folks that should be testing it know that they need to test it out?

[GeorgianaElena]

Yep! It's on the Gitter chat.

[GeorgianaElena]

Deployed on prod 🎉

[rabernat]

Fantastic, thanks so much for this integration!

Going forward, 2i2c folks should feel free to engage on https://github.com/pangeo-data/pangeo-docker-images/ when it comes to updating this image. Many of the changes here could be pushed upstream.

In the long term, we need to find a way to make updates to the pangeo environments less dependent on support from the admins. This image has a lot of churn, since we always need to be on the bleeding edge of the many package releases. I notice we are pinning to a particular commit, but the pangeo-notebook image is often updated several times a week. So this will be stale in a few weeks.