Dockerfile CMD contains unsupported flag --allow-root

[jsnowacki]

The jupyter/notebook base Dockerfile contains line:

CMD ["jupyter", "notebook", "--no-browser", "--allow-root"]

which causes an error:

[36mjupyter_1  | [0m [C 14:51:25.484 NotebookApp] Bad config encountered during initialization:
[36mjupyter_1  | [0m [C 14:51:25.484 NotebookApp] Unrecognized flag: '--allow-root'

It seems that the flag has been removed from Jupyter, as removing the offending flag --allow-root fixes the issue and the Docker image seems to work fine.

Cheers,

Jakub

[takluyver]

It was only added less than a month ago - #1468. The --allow-root flag was a recent addition (#1115), not a recent removal.

[jsnowacki]

Thanks for the clarification. The bottom line is that if you pull docker image from the docker hub, i.e. https://hub.docker.com/r/jupyter/notebook/, it throws the above error. I'm currently using the docker-stack images, i.e. https://github.com/jupyter/docker-stacks, and, indeed, they work fine.

[takluyver]

I'm not exactly sure how docker hub works, but it sounds like you're getting a released version of the notebook code with the master version of the Dockerfile. Since they're in the same repo, they ought to be used in sync. I see on #1468 a suggestion about removing the Dockerfile from this repo entirely in favour of docker-stacks, though.

[Baughn]

The instructions in the github README still causes this error. How am I practically speaking intended to install this?

[minrk]

@Baughn the docker bit in the README should have been removed; it's gone in #1603. The notebook can be installed with pip install notebook. A developer install can be made from master with:

git clone https://github.com/jupyter/notebook
cd notebook
pip install -e .

If you want to build an image that includes a release of the notebook, start from one of the docker-stacks.