Created a new Ubuntu:22.04 based Python notebook that is S3 mount aware

.gitignore

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+.DS_Store
+

jupyter/python-minimal-s3/Dockerfile

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+FROM --platform=$BUILDPLATFORM ubuntu:22.04
+ENV DEBIAN_FRONTEND noninteractive
+
+USER root
+
+RUN apt-get update && apt-get upgrade -y && apt-get install -y \
+    python3.11 \
+    python3-pip \
+    python3.11-venv \
+    build-essential \
+    python3-dev \
+    curl \
+    wget \
+    git \
+    vim \
+    nano-tiny \
+    unzip \
+    s3fs && \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
+
+RUN pip3 install \
+    'jupyterhub==4.*' \
+    'notebook==7.*'
+
+COPY src/ /opt/launch
+RUN chmod +x /opt/launch/launch.sh && chmod +x /opt/launch/conf.d/*
+ENV PATH="${PATH}:/opt/launch/"
+
+# create a user, since we don't want to run as root
+RUN useradd -m jovyan
+ENV HOME=/home/jovyan
+WORKDIR $HOME
+USER jovyan
+
+CMD ["launch.sh"]

jupyter/python-minimal-s3/src/conf.d/00-mount-s3

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+#!/bin/bash
+
+if [[ -z "${HEX_S3_KEY}" ]]; then
+    echo "No S3 key, refusing to attempt to mount"
+    exit 0
+fi
+
+if [[ -z "${HEX_S3_SECRET}" ]]; then
+    echo "No S3 secret, refusing to attempt to mount"
+    exit 0
+fi
+
+if [[ -z "${HEX_S3_BUCKET}" ]]; then
+    echo "No S3 bucket, refusing to attempt to mount"
+    exit 0
+fi
+
+if [[ -z "${HEX_S3_MOUNT_PATH}" ]]; then
+    HEX_S3_MOUNT_PATH="/home/jovyan/work"
+    echo "Using default s3 work path"
+fi
+
+
+cat >/home/jovyan/.s3auth <<EOL
+${HEX_S3_KEY}:${HEX_S3_SECRET}
+EOL
+chmod 600 /home/jovyan/.s3auth
+
+echo s3fs ${HEX_S3_BUCKET} ${HEX_S3_MOUNT_PATH} -o passwd_file=/home/jovyan/.s3auth -o url=http://ucrel-hex-store.scc.lancs.ac.uk:3900/ -o use_path_request_style
+
+cp /opt/launch/res/README.md

jupyter/python-minimal-s3/src/conf.d/99-jupyterhub-singleuser

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+#!/bin/bash
+
+jupyterhub-singleuser

jupyter/python-minimal-s3/src/launch.sh

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+#!/bin/bash
+
+run-parts --verbose /opt/launch/conf.d

jupyter/python-minimal-s3/src/res/README.md

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+# S3 Persistent Storage
+
+This instance is connected to the local S3 storage instance.
+
+To have your files saved, keep them in the `work` folder.
+
+
+## More Detailed Explanation
+
+This means that any data in your `work` folder will be persisted across instances, and will be stored on Hex's storage
+system automatically. However, this storage is significantly slower than the local storage in your home folder, so you
+may wish to transfer files in/out of the work folder to improve your program's performance if it does a large number of
+out-of-order writes.
+