I am running Jupyter Hub on a Kubernetes Cluster which I set up using this guide: https://zero-to-jupyterhub.readthedocs.io/en/latest/index.html#creating-your-jupyterhub
I have tried the install instructions here to set up NBGrader in the terminal of the cloudshell: https://nbgrader.readthedocs.io/en/stable/user_guide/installation.html
At the command jupyter nbextension install --sys-prefix --py nbgrader --overwrite I am getting -bash: jupyter: command not found.
Any suggestions?