starting Jupyter in docker fails

[soniah]

starting Jupyter in docker fails

$ ls
Chapter1   Chapter12  Chapter15  Chapter4  Chapter7  Dockerfile  images       notebook_template.ipynb
Chapter10  Chapter13  Chapter2   Chapter5  Chapter8  ExercisesI  index.html   params.json
Chapter11  Chapter14  Chapter3   Chapter6  Chapter9  README.md   javascripts  stylesheets

$ ... f8effd4 (HEAD -> dev, origin/master, origin/HEAD, master) Merge pull request #12 from ecklm/dockerisation

$ docker -v
Docker version 18.03.0-ce, build 0520e24

$ docker run --rm -it -p 8888:8888 -v "$(pwd):/notebooks" jupyter/notebook
[C 06:37:47.269 NotebookApp] Bad config encountered during initialization:
[C 06:37:47.269 NotebookApp] Unrecognized flag: '--allow-root'