Add CPU Root Dockerfile (#3)

* Create Dockerfile

* Create README.md

restricted-cpu-root/Dockerfile

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+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+FROM quay.io/cdis/scipy-notebook:2023-03-13
+USER root
+
+## Configure default locale, see https://github.com/rocker-org/rocker/issues/19
+RUN echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen \
+	&& locale-gen en_US.utf8 \
+	&& /usr/sbin/update-locale LANG=en_US.UTF-8
+
+ENV LC_ALL en_US.UTF-8
+ENV LANG en_US.UTF-8
+
+#
+# !!!!!NOTE!!!!!
+# Do not install conda, python, pip, etc dependencies as root
+# It screws up directory permissions
+#
+USER $NB_UID
+WORKDIR /home/$NB_USER
+
+
+RUN pip install --upgrade nbconvert==5.6.1 && \
+   pip install --upgrade gen3
+
+
+COPY --chown=jovyan:users resources/custom.js /home/$NB_USER/.jupyter/custom/
+COPY --chown=jovyan:users resources/jupyter_notebook_config.py /home/$NB_USER/.jupyter/tmp.py
+RUN cat /home/$NB_USER/.jupyter/tmp.py >> /home/$NB_USER/.jupyter/jupyter_notebook_config.py && rm /home/$NB_USER/.jupyter/tmp.py
+
+RUN pip install --upgrade pip
+RUN pip install jupyter --upgrade
+
+# step 1 to disable downloads:
+RUN jupyter labextension disable @jupyterlab/docmanager-extension:download \
+    && jupyter labextension disable @jupyterlab/filebrowser-extension:download
+
+# step 2 to disable downloads:
+RUN pip uninstall nbconvert --yes
+
+RUN pip install gen3
+RUN pip install gen3-tracker
+

restricted-cpu-root/README.md

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+# Restricted CPU Root
+
+Dockerfile containing the Jupyter Notebooks for the Bridge2AI project, adapted from the [restricted-gpu-slim/Dockerfile](https://github.com/uc-cdis/containers/blob/master/jupyter-slim/Dockerfile) from Center for Translational Data Science at University of Chicago. No GPU features are enabled in this Dockerfile but root access is provided, making this a suitable image for building off of.