issue running ./restart_demo.sh demo_one_class_one_grader

[bpfrd]

Hello,

I get the following error while running the script provided in demos folder ./restart_demo.sh demo_one_class_one_grader

• jupyter nbextension install --symlink --sys-prefix --py nbgrader --overwrite
  Traceback (most recent call last):
  File "/usr/local/bin/jupyter-nbextension", line 8, in
  sys.exit(main())
  File "/usr/local/lib/python3.9/dist-packages/jupyter_core/application.py", line 277, in launch_instance
  return super().launch_instance(argv=argv, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/traitlets/config/application.py", line 1043, in launch_instance
  app.start()
  File "/usr/local/lib/python3.9/dist-packages/notebook/nbextensions.py", line 972, in start
  super().start()
  File "/usr/local/lib/python3.9/dist-packages/jupyter_core/application.py", line 266, in start
  self.subapp.start()
  File "/usr/local/lib/python3.9/dist-packages/notebook/nbextensions.py", line 702, in start
  self.install_extensions()
  File "/usr/local/lib/python3.9/dist-packages/notebook/nbextensions.py", line 675, in install_extensions
  full_dests = install(self.extra_args[0],
  File "/usr/local/lib/python3.9/dist-packages/notebook/nbextensions.py", line 203, in install_nbextension_python
  m, nbexts = _get_nbextension_metadata(module)
  File "/usr/local/lib/python3.9/dist-packages/notebook/nbextensions.py", line 1107, in _get_nbextension_metadata
  m = import_item(module)
  File "/usr/local/lib/python3.9/dist-packages/traitlets/utils/importstring.py", line 38, in import_item
  return import(parts[0])
  ModuleNotFoundError: No module named 'nbgrader'

---

When I run the mentioned script for the second time, it works! Here is the Dockerfile where I set up the environment:
FROM node:latest

RUN apt-get update && apt-get upgrade -y &&
apt-get install -y sudo vim

RUN mkdir /srv/nbgrader-dir

WORKDIR /srv/nbgrader-dir

RUN git clone https://github.com/jupyter/nbgrader.git .

RUN cp demos/formgrader_workspace.json /root

EXPOSE 8000

CMD ["/bin/bash"]

best regards

[bpfrd]

Sorry, I just saw the Dockerfile that you already provided in the demos directory and that works perfectly fine. The only question now is that if I want to deploy it what directories should I mount in the dockerfile so that the students' answers and the teacher's data don't get lost?

best regards
behnam

[perllaghu]

The default exchange uses /usr/local/share/nbgrader/exchange as the common directory - and ensure to chmod 777 so everyone can read/write to it.

[bpfrd]

but is mounting only exchange directory sufficient? don't we need to mount the home directory of students and instructors? for example, if they work on their assignment and don't submit it! if they come back later will the data persist?

[brichet]

@bpfrd did you find answers to your questions ?