Enable nbserverproxy Dask Dashboards

[Julien Chastang]

in Unidata JupyterHub Dockerfile

See https://github.com/pangeo-data/pangeo/blob/4d6d41d62dfbbe2ac06dcaa7f74ccb4e03d66e6e/gce/notebook/Dockerfile#L55

ping @rsignell-usgs @zonca

[Julien Chastang]

@zonca Do any special ports need to be open?

[Andrea Zonca]

No, any port is proxied by the extension

…

[Rich Signell]

It's working! Based on the info client printed out:

I used the list port 46116 instead in this URL:
https://149.165.168.53/user/rsignell/proxy/46116/status
and it worked!

Proof: https://149.165.168.53/user/rsignell/proxy/46116/tasks