Contributed Recipes#

Users sometimes share interesting ways of using the Jupyter Docker Stacks. We encourage users to contribute these recipes to the documentation in case they prove helpful to other community members by submitting a pull request to docs/using/recipes.md. The sections below capture this knowledge.

Using sudo within a container#

Password authentication is disabled for the NB_USER (e.g., jovyan). We made this choice to avoid distributing images with a weak default password that users ~might~ will forget to change before running a container on a publicly accessible host.

You can grant the within-container NB_USER passwordless sudo access by adding --user root and -e GRANT_SUDO=yes to your Docker command line or appropriate container orchestrator config.

For example:

docker run -it --rm \
    --user root \
    -e GRANT_SUDO=yes \
    quay.io/jupyter/base-notebook

You should only enable sudo if you trust the user and/or if the container is running on an isolated host. See Docker security documentation for more information about running containers as root.

Add a custom conda environment and Jupyter kernel#

The default version of Python that ships with the image may not be the version you want. The instructions below permit adding a conda environment with a different Python version and making it accessible to Jupyter. You may also use older images like jupyter/base-notebook:python-3.10. A list of all tags can be found here

FROM quay.io/jupyter/minimal-notebook

# Name your environment and choose the Python version
ARG env_name=python310
ARG py_ver=3.10

# You can add additional libraries here
RUN mamba create --yes -p "${CONDA_DIR}/envs/${env_name}" \
    python=${py_ver} \
    'ipykernel' \
    'jupyterlab' && \
    mamba clean --all -f -y

# Alternatively, you can comment out the lines above and uncomment those below
# if you'd prefer to use a YAML file present in the docker build context

# COPY --chown=${NB_UID}:${NB_GID} environment.yml /tmp/
# RUN mamba env create -p "${CONDA_DIR}/envs/${env_name}" -f /tmp/environment.yml && \
#     mamba clean --all -f -y

# Create Python kernel and link it to jupyter
RUN "${CONDA_DIR}/envs/${env_name}/bin/python" -m ipykernel install --user --name="${env_name}" && \
    fix-permissions "${CONDA_DIR}" && \
    fix-permissions "/home/${NB_USER}"

# Any additional `pip` installs can be added by using the following line
# Using `mamba` is highly recommended though
RUN "${CONDA_DIR}/envs/${env_name}/bin/pip" install --no-cache-dir \
    'flake8'

# This changes the custom Python kernel so that the custom environment will
# be activated for the respective Jupyter Notebook and Jupyter Console
# hadolint ignore=DL3059
RUN /opt/setup-scripts/activate_notebook_custom_env.py "${env_name}"

# Comment the line above and uncomment the section below instead to activate the custom environment by default
# Note: uncommenting this section makes "${env_name}" default both for Jupyter Notebook and Terminals
# More information here: https://github.com/jupyter/docker-stacks/pull/2047
# USER root
# RUN \
#     # This changes a startup hook, which will activate the custom environment for the process
#     echo conda activate "${env_name}" >> /usr/local/bin/before-notebook.d/10activate-conda-env.sh && \
#     # This makes the custom environment default in Jupyter Terminals for all users which might be created later
#     echo conda activate "${env_name}" >> /etc/skel/.bashrc && \
#     # This makes the custom environment default in Jupyter Terminals for already existing NB_USER
#     echo conda activate "${env_name}" >> "/home/${NB_USER}/.bashrc"

USER ${NB_UID}

Dask JupyterLab Extension#

Dask JupyterLab Extension provides a JupyterLab extension to manage Dask clusters, as well as embed Dask’s dashboard plots directly into JupyterLab panes. Create the Dockerfile as:

FROM quay.io/jupyter/base-notebook

# Install the Dask dashboard
RUN mamba install --yes 'dask-labextension' && \
    mamba clean --all -f -y && \
    fix-permissions "${CONDA_DIR}" && \
    fix-permissions "/home/${NB_USER}"

# Dask Scheduler port
EXPOSE 8787

And build the image as:

docker build --rm --tag my-custom-image .

Once built, run using the command:

docker run -it --rm \
    -p 8888:8888 \
    -p 8787:8787 \
    my-custom-image

Let’s Encrypt a Server#

Warning

This recipe is not tested and might be broken.

See the README for basic automation here jupyter/docker-stacks which includes steps for requesting and renewing a Let’s Encrypt certificate.

Ref: jupyter/docker-stacks#78

Slideshows with JupyterLab and RISE#

RISE: “Live” Reveal.js JupyterLab Slideshow Extension.

Note

We’re providing the recipe to install the JupyterLab extension. You can find the original Jupyter Notebook extension here

FROM quay.io/jupyter/base-notebook

RUN mamba install --yes 'jupyterlab_rise' && \
    mamba clean --all -f -y && \
    fix-permissions "${CONDA_DIR}" && \
    fix-permissions "/home/${NB_USER}"

xgboost#

FROM quay.io/jupyter/base-notebook

RUN mamba install --yes 'py-xgboost' && \
    mamba clean --all -f -y && \
    fix-permissions "${CONDA_DIR}" && \
    fix-permissions "/home/${NB_USER}"

Running behind an nginx proxy#

Warning

This recipe is not tested and might be broken.

Sometimes it is helpful to run the Jupyter instance behind an nginx proxy, for example:

  • you would prefer to access the notebook at a server URL with a path (https://example.com/jupyter) rather than a port (https://example.com:8888)

  • you may have many services in addition to Jupyter running on the same server and want nginx to help improve server performance in managing the connections

Here is a quick example of NGINX configuration to get started. You’ll need a server, a .crt, and a .key file for your server, and docker & docker-compose installed. Then download the files at that gist and run docker-compose up to test it out. Customize the nginx.conf file to set the desired paths and add other services.

Host volume mounts and notebook errors#

If you are mounting a host directory as /home/jovyan/work in your container, and you receive permission errors or connection errors when you create a notebook, be sure that the jovyan user (UID=1000 by default) has read/write access to the directory on the host. Alternatively, specify the UID of the jovyan user on container startup using the -e NB_UID option described in the Common Features, Docker Options section

Ref: jupyter/docker-stacks#199

Manpage installation#

Most containers, including our Ubuntu base image, ship without manpages installed to save space. You can use the following Dockerfile to inherit from one of our images to enable manpages:

FROM quay.io/jupyter/base-notebook

# Fix: https://github.com/hadolint/hadolint/wiki/DL4006
# Fix: https://github.com/koalaman/shellcheck/wiki/SC3014
SHELL ["/bin/bash", "-o", "pipefail", "-c"]

USER root

# `/etc/dpkg/dpkg.cfg.d/excludes` contains several `path-exclude`s, including man pages
# Remove it, then install man, install docs
RUN rm /etc/dpkg/dpkg.cfg.d/excludes && \
    apt-get update --yes && \
    dpkg -l | grep ^ii | cut -d' ' -f3 | xargs apt-get install --yes --no-install-recommends --reinstall man && \
    apt-get clean && rm -rf /var/lib/apt/lists/*

USER ${NB_UID}

Adding the documentation on top of the existing image wastes a lot of space and requires reinstalling every system package, which can take additional time and bandwidth. Enabling manpages in the base Ubuntu layer prevents this container bloat. To achieve this, use the previous Dockerfile’s commands with the original ubuntu image as your base container:

FROM ubuntu:22.04

Be sure to check the current base image in jupyter/docker-stacks-foundation before building.

JupyterHub#

We also have contributed recipes for using JupyterHub.

Use JupyterHub’s DockerSpawner#

You can find an example of using DockerSpawner here.

Containers with a specific version of JupyterHub#

The version of jupyterhub in your image should match the version in JupyterHub itself. To use a specific version of JupyterHub, do the following:

FROM quay.io/jupyter/base-notebook

RUN mamba install --yes 'jupyterhub==4.0.1' && \
    mamba clean --all -f -y && \
    fix-permissions "${CONDA_DIR}" && \
    fix-permissions "/home/${NB_USER}"

Spark#

A few suggestions have been made regarding using Docker Stacks with Spark.

Using PySpark with AWS S3#

Warning

This recipe is not tested and might be broken.

Using Spark session for Hadoop 2.7.3

import os

# To figure out what version of Hadoop, run:
# ls /usr/local/spark/jars/hadoop*
os.environ["PYSPARK_SUBMIT_ARGS"] = (
    '--packages "org.apache.hadoop:hadoop-aws:2.7.3" pyspark-shell'
)

import pyspark

myAccessKey = input()
mySecretKey = input()

spark = (
    pyspark.sql.SparkSession.builder.master("local[*]")
    .config("spark.hadoop.fs.s3a.access.key", myAccessKey)
    .config("spark.hadoop.fs.s3a.secret.key", mySecretKey)
    .getOrCreate()
)

df = spark.read.parquet("s3://myBucket/myKey")

Using Spark context for Hadoop 2.6.0

import os

os.environ["PYSPARK_SUBMIT_ARGS"] = (
    "--packages com.amazonaws:aws-java-sdk:1.10.34,org.apache.hadoop:hadoop-aws:2.6.0 pyspark-shell"
)

import pyspark

sc = pyspark.SparkContext("local[*]")

from pyspark.sql import SQLContext

sqlContext = SQLContext(sc)

hadoopConf = sc._jsc.hadoopConfiguration()
myAccessKey = input()
mySecretKey = input()
hadoopConf.set("fs.s3.impl", "org.apache.hadoop.fs.s3native.NativeS3FileSystem")
hadoopConf.set("fs.s3.awsAccessKeyId", myAccessKey)
hadoopConf.set("fs.s3.awsSecretAccessKey", mySecretKey)

df = sqlContext.read.parquet("s3://myBucket/myKey")

Ref: jupyter/docker-stacks#127

Using Local Spark JARs#

Warning

This recipe is not tested and might be broken.

import os

os.environ["PYSPARK_SUBMIT_ARGS"] = (
    "--jars /home/jovyan/spark-streaming-kafka-assembly_2.10-1.6.1.jar pyspark-shell"
)
import pyspark
from pyspark.streaming.kafka import KafkaUtils
from pyspark.streaming import StreamingContext

sc = pyspark.SparkContext()
ssc = StreamingContext(sc, 1)
broker = "<my_broker_ip>"
directKafkaStream = KafkaUtils.createDirectStream(
    ssc, ["test1"], {"metadata.broker.list": broker}
)
directKafkaStream.pprint()
ssc.start()

Ref: jupyter/docker-stacks#154

Using spark-packages.org#

Warning

This recipe is not tested and might be broken.

If you’d like to use packages from spark-packages.org, see https://gist.github.com/parente/c95fdaba5a9a066efaab for an example of how to specify the package identifier in the environment before creating a SparkContext.

Ref: jupyter/docker-stacks#43

Use jupyter/all-spark-notebooks with an existing Spark/YARN cluster#

Warning

This recipe is not tested and might be broken.

FROM quay.io/jupyter/all-spark-notebook

# Set env vars for pydoop
ENV HADOOP_HOME /usr/local/hadoop-2.7.3
ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64
ENV HADOOP_CONF_HOME /usr/local/hadoop-2.7.3/etc/hadoop
ENV HADOOP_CONF_DIR /usr/local/hadoop-2.7.3/etc/hadoop

USER root
# Add proper open-jdk-8 not the jre only, needed for pydoop
RUN echo 'deb https://cdn-fastly.deb.debian.org/debian jessie-backports main' > /etc/apt/sources.list.d/jessie-backports.list && \
    apt-get update --yes && \
    apt-get install --yes --no-install-recommends -t jessie-backports openjdk-8-jdk && \
    rm /etc/apt/sources.list.d/jessie-backports.list && \
    apt-get clean && rm -rf /var/lib/apt/lists/* && \
# Add Hadoop binaries
    wget --progress=dot:giga https://mirrors.ukfast.co.uk/sites/ftp.apache.org/hadoop/common/hadoop-2.7.3/hadoop-2.7.3.tar.gz && \
    tar -xvf hadoop-2.7.3.tar.gz -C /usr/local && \
    chown -R "${NB_USER}:users" /usr/local/hadoop-2.7.3 && \
    rm -f hadoop-2.7.3.tar.gz && \
# Install os dependencies required for pydoop, pyhive
    apt-get update --yes && \
    apt-get install --yes --no-install-recommends build-essential python-dev libsasl2-dev && \
    apt-get clean && rm -rf /var/lib/apt/lists/* && \
# Remove the example hadoop configs and replace
# with those for our cluster.
# Alternatively, this could be mounted as a volume
    rm -f /usr/local/hadoop-2.7.3/etc/hadoop/*

# Download this from ambari/cloudera manager and copy it here
COPY example-hadoop-conf/ /usr/local/hadoop-2.7.3/etc/hadoop/

# Spark-Submit doesn't work unless I set the following
RUN echo "spark.driver.extraJavaOptions -Dhdp.version=2.5.3.0-37" >> /usr/local/spark/conf/spark-defaults.conf && \
    echo "spark.yarn.am.extraJavaOptions -Dhdp.version=2.5.3.0-37" >> /usr/local/spark/conf/spark-defaults.conf && \
    echo "spark.master=yarn" >>  /usr/local/spark/conf/spark-defaults.conf && \
    echo "spark.hadoop.yarn.timeline-service.enabled=false" >> /usr/local/spark/conf/spark-defaults.conf && \
    chown -R "${NB_USER}:users" /usr/local/spark/conf/spark-defaults.conf && \
    # Create an alternative HADOOP_CONF_HOME so we can mount as a volume and repoint
    # using ENV var if needed
    mkdir -p /etc/hadoop/conf/ && \
    chown "${NB_USER}":users /etc/hadoop/conf/

USER ${NB_UID}

# Install useful jupyter extensions and python libraries like :
# - Dashboards
# - PyDoop
# - PyHive
RUN pip install --no-cache-dir 'jupyter_dashboards' 'faker' && \
    jupyter dashboards quick-setup --sys-prefix && \
    pip2 install --no-cache-dir 'pyhive' 'pydoop' 'thrift' 'sasl' 'thrift_sasl' 'faker' && \
    fix-permissions "${CONDA_DIR}" && \
    fix-permissions "/home/${NB_USER}"

USER root
# Ensure we overwrite the kernel config so that toree connects to cluster
RUN jupyter toree install --sys-prefix --spark_opts="\
    --master yarn \
    --deploy-mode client \
    --driver-memory 512m \
    --executor-memory 512m \
    --executor-cores 1 \
    --driver-java-options \
    -Dhdp.version=2.5.3.0-37 \
    --conf spark.hadoop.yarn.timeline-service.enabled=false \
"
USER ${NB_UID}

Credit: britishbadger from docker-stacks/issues/369

Run Server inside an already secured environment (i.e., with no token)#

The default security is very good. There are use cases, encouraged by containers, where the jupyter container and the system it runs within lie inside the security boundary. It is convenient to launch the server without a password or token in these use cases. In this case, you should use the start-notebook.py script to launch the server with no token:

For JupyterLab:

docker run -it --rm \
    quay.io/jupyter/base-notebook \
    start-notebook.py --IdentityProvider.token=''

For Jupyter Notebook:

docker run -it --rm \
    -e DOCKER_STACKS_JUPYTER_CMD=notebook \
    quay.io/jupyter/base-notebook \
    start-notebook.py --IdentityProvider.token=''

Enable nbclassic-extension spellchecker for markdown (or any other nbclassic-extension)#

Note

This recipe only works for NBCassic with Jupyter Notebook < 7. It is recommended to use jupyterlab-spellchecker in modern environments.

# Using Docker Hub here, because this image is old and not pushed to Quay.io
FROM docker.io/jupyter/base-notebook:notebook-6.5.4

RUN pip install --no-cache-dir 'jupyter_contrib_nbextensions' && \
    jupyter contrib nbextension install --user && \
    # can modify or enable additional extensions here
    jupyter nbclassic-extension enable spellchecker/main --user && \
    fix-permissions "${CONDA_DIR}" && \
    fix-permissions "/home/${NB_USER}"

Enable Delta Lake in Spark notebooks#

Warning

This recipe is not tested and might be broken.

Please note that the Delta Lake packages are only available for Spark version > 3.0. By adding the properties to spark-defaults.conf, the user no longer needs to enable Delta support in each notebook.

FROM quay.io/jupyter/pyspark-notebook

RUN mamba install --yes 'delta-spark' && \
    mamba clean --all -f -y && \
    fix-permissions "${CONDA_DIR}" && \
    fix-permissions "/home/${NB_USER}"

USER root

RUN echo 'spark.sql.extensions io.delta.sql.DeltaSparkSessionExtension' >> "${SPARK_HOME}/conf/spark-defaults.conf" && \
    echo 'spark.sql.catalog.spark_catalog org.apache.spark.sql.delta.catalog.DeltaCatalog' >> "${SPARK_HOME}/conf/spark-defaults.conf"

USER ${NB_UID}

# Trigger download of delta lake files
RUN echo "from pyspark.sql import SparkSession" > /tmp/init-delta.py && \
    echo "from delta import *" >> /tmp/init-delta.py && \
    echo "spark = configure_spark_with_delta_pip(SparkSession.builder).getOrCreate()" >> /tmp/init-delta.py && \
    python /tmp/init-delta.py && \
    rm /tmp/init-delta.py

Add Custom Fonts in Scipy notebook#

Warning

This recipe is not tested and might be broken.

The example below is a Dockerfile to load Source Han Sans with normal weight, usually used for the web.

FROM quay.io/jupyter/scipy-notebook

RUN PYV=$(ls "${CONDA_DIR}/lib" | grep ^python) && \
    MPL_DATA="${CONDA_DIR}/lib/${PYV}/site-packages/matplotlib/mpl-data" && \
    wget --progress=dot:giga -P "${MPL_DATA}/fonts/ttf/" https://mirrors.cloud.tencent.com/adobe-fonts/source-han-sans/SubsetOTF/CN/SourceHanSansCN-Normal.otf && \
    sed -i 's/#font.family/font.family/g' "${MPL_DATA}/matplotlibrc" && \
    sed -i 's/#font.sans-serif:/font.sans-serif: Source Han Sans CN,/g' "${MPL_DATA}/matplotlibrc" && \
    sed -i 's/#axes.unicode_minus: True/axes.unicode_minus: False/g' "${MPL_DATA}/matplotlibrc" && \
    rm -rf "/home/${NB_USER}/.cache/matplotlib" && \
    python -c 'import matplotlib.font_manager;print("font loaded: ",("Source Han Sans CN" in [f.name for f in matplotlib.font_manager.fontManager.ttflist]))'

Enable clipboard in pandas on Linux systems#

Warning

This recipe is not tested and might be broken.

Additional notes

This solution works on Linux host systems.
It is not required on Windows and won't work on macOS.

To enable the pandas.read_clipboard() functionality, you need to have xclip installed (installed in minimal-notebook and all the inherited images) and add these options when running docker: -e DISPLAY -v /tmp/.X11-unix:/tmp/.X11-unix, i.e.:

docker run -it --rm \
    -e DISPLAY \
    -v /tmp/.X11-unix:/tmp/.X11-unix \
    quay.io/jupyter/minimal-notebook

Add ijavascript kernel to container#

Warning

This recipe is not tested and might be broken.

The example below is a Dockerfile to install the ijavascript kernel.

FROM quay.io/jupyter/scipy-notebook

# install ijavascript
RUN npm install -g ijavascript
RUN ijsinstall

Add Microsoft SQL Server ODBC driver#

The following recipe demonstrates how to add functionality to read from and write to an instance of Microsoft SQL server in your notebook.

FROM quay.io/jupyter/base-notebook

# Fix: https://github.com/hadolint/hadolint/wiki/DL4006
# Fix: https://github.com/koalaman/shellcheck/wiki/SC3014
SHELL ["/bin/bash", "-o", "pipefail", "-c"]

USER root

ENV MSSQL_DRIVER "ODBC Driver 18 for SQL Server"
ENV PATH="/opt/mssql-tools18/bin:${PATH}"

RUN apt-get update --yes && \
    apt-get install --yes --no-install-recommends curl gnupg2 lsb-release && \
    curl https://packages.microsoft.com/keys/microsoft.asc | apt-key add - && \
    curl "https://packages.microsoft.com/config/ubuntu/$(lsb_release -rs)/prod.list" > /etc/apt/sources.list.d/mssql-release.list && \
    apt-get update --yes && \
    ACCEPT_EULA=Y apt-get install --yes --no-install-recommends msodbcsql18 && \
    # optional: for bcp and sqlcmd
    ACCEPT_EULA=Y apt-get install --yes --no-install-recommends mssql-tools18 && \
    # optional: for unixODBC development headers
    apt-get install --yes --no-install-recommends unixodbc-dev && \
    apt-get clean && rm -rf /var/lib/apt/lists/*

# Switch back to jovyan to avoid accidental container runs as root
USER ${NB_UID}

RUN mamba install --yes 'pyodbc' && \
    mamba clean --all -f -y && \
    fix-permissions "${CONDA_DIR}" && \
    fix-permissions "/home/${NB_USER}"

You can now use pyodbc and sqlalchemy to interact with the database.

Pre-built images are hosted in the Realiserad/jupyter-docker-mssql repository.

Add Oracle SQL Instant client, SQL*Plus, and other tools (Version 21.x)#

Note

This recipe only works for x86_64 architecture.

The following recipe demonstrates how to add functionality to connect to an Oracle Database using Oracle Instant Client in your notebook. This recipe installs version 21.11.0.0.0.

Nonetheless, go to the Oracle Instant Client Download page for the complete list of versions available. You may need to perform different steps for older versions; they may be explained in the “Installation instructions” section of the Downloads page.

FROM quay.io/jupyter/base-notebook

USER root

# Install Java & Oracle SQL Instant Client
RUN apt-get update --yes && \
    apt-get install --yes --no-install-recommends software-properties-common && \
    add-apt-repository universe && \
    apt-get update --yes && \
    apt-get install --yes --no-install-recommends alien default-jre default-jdk openjdk-11-jdk libaio1 && \
    apt-get clean && rm -rf /var/lib/apt/lists/*

# Oracle
ARG INSTANTCLIENT_MAJOR_VERSION=23
ARG INSTANTCLIENT_BIN_SUFFIX=${INSTANTCLIENT_MAJOR_VERSION}.4.0.24.05-1.el9.x86_64.rpm
ARG INSTANTCLIENT_URL=https://download.oracle.com/otn_software/linux/instantclient/2340000

# Then install Oracle SQL Instant client, SQL+Plus, tools, and JDBC.
# Note: You may need to change the URL to a newer version.
# See: https://www.oracle.com/es/database/technologies/instant-client/linux-x86-64-downloads.html
RUN mkdir "/opt/oracle"
WORKDIR "/opt/oracle"
# alien doesn't work well with sqlplus, so skipping it for now
RUN wget --progress=dot:giga "${INSTANTCLIENT_URL}/oracle-instantclient-basiclite-${INSTANTCLIENT_BIN_SUFFIX}" && \
    alien --install --scripts "oracle-instantclient-basiclite-${INSTANTCLIENT_BIN_SUFFIX}" && \
    wget --progress=dot:giga "${INSTANTCLIENT_URL}/oracle-instantclient-sqlplus-${INSTANTCLIENT_BIN_SUFFIX}" && \
    # alien --install --scripts "oracle-instantclient-sqlplus-${INSTANTCLIENT_BIN_SUFFIX}" && \
    wget --progress=dot:giga "${INSTANTCLIENT_URL}/oracle-instantclient-tools-${INSTANTCLIENT_BIN_SUFFIX}" && \
    alien --install --scripts "oracle-instantclient-tools-${INSTANTCLIENT_BIN_SUFFIX}" && \
    wget --progress=dot:giga "${INSTANTCLIENT_URL}/oracle-instantclient-jdbc-${INSTANTCLIENT_BIN_SUFFIX}" && \
    alien --install --scripts "oracle-instantclient-jdbc-${INSTANTCLIENT_BIN_SUFFIX}" && \
    chown -R "${NB_UID}":"${NB_GID}" "${HOME}/.rpmdb" && \
    rm -f ./*.rpm

# And configure variables
RUN echo "ORACLE_HOME=/usr/lib/oracle/${INSTANTCLIENT_MAJOR_VERSION}/client64" >> "${HOME}/.bashrc" && \
    echo "PATH=${ORACLE_HOME}/bin:${PATH}" >> "${HOME}/.bashrc" && \
    echo "LD_LIBRARY_PATH=${ORACLE_HOME}/lib:${LD_LIBRARY_PATH}" >> "${HOME}/.bashrc" && \
    echo "export ORACLE_HOME" >> "${HOME}/.bashrc" && \
    echo "export PATH" >> "${HOME}/.bashrc" && \
    echo "export LD_LIBRARY_PATH" >> "${HOME}/.bashrc"

# Add credentials for /redacted/ using Oracle DB.
WORKDIR /usr/lib/oracle/${INSTANTCLIENT_MAJOR_VERSION}/client64/lib/network/admin/
# Add a wildcard `[]` on the last letter of the filename to avoid throwing an error if the file does not exist.
# See: https://stackoverflow.com/questions/31528384/conditional-copy-add-in-dockerfile
COPY cwallet.ss[o] ./
COPY sqlnet.or[a] ./
COPY tnsnames.or[a] ./

# Switch back to jovyan to avoid accidental container runs as root
USER "${NB_UID}"

WORKDIR "${HOME}"

# Install `oracledb` Python library to use Oracle SQL Instant Client
RUN mamba install --yes 'oracledb' && \
    mamba clean --all -f -y && \
    fix-permissions "${CONDA_DIR}" && \
    fix-permissions "/home/${NB_USER}"