Jupyterhub/singleuser shared volume

I’m trying to setup a Jupyterhub server on Ubuntu 16.04, much along the lines of https://github.com/minrk/jupyterhub-demo.

I changed the jupyterhub_config.py to support persistent storage using the tips given here https://github.com/jupyterhub/dockerspawner#data-persistence-and-dockerspawner:

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  • notebook_dir = os.environ.get('DOCKER_NOTEBOOK_DIR') or '/home/jovyan/work'
    c.DockerSpawner.notebook_dir = notebook_dir
    c.DockerSpawner.volumes = { 'jupyterhub-user-{username}': notebook_dir }

    However, I would like to add a shared “team” volume for teams of users. I have a dictionary with usernames (keys) and teamnames (values) to map users to teams.

    Ideally I would state something like:

    c.DockerSpawner.volumes = { 
        'jupyterhub-user-{username}': notebook_dir, 
        'jupyterhub-team-{teamname}': os.path.join(notebook_dir, 'shared' 

    But I have no clue as to how to pass another {name} mapping to dockerspawner.

    I tried fiddling with these, but so far to no avail:

    c.DockerSpawner. ...
    extra_create_kwargs = Dict(config=True, help="Additional args to pass for container create")
    extra_start_kwargs = Dict(config=True, help="Additional args to pass for container start")
    extra_host_config = Dict(config=True, help="Additional args to create_host_config for container create")

    Any ideas?

    P.S.: This question is somewhat related to Shared, writable folders in jupyterhub

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