Added images

images/base/dockerfile

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+FROM python:3.12-slim-bookworm AS base
+
+LABEL org.opencontainers.image.title="tenant-base" \
+      org.opencontainers.image.description="Hardened base image for tenant workspaces" \
+      org.opencontainers.image.source="https://git.bouvais.lu/adrien/"
+
+# System deps only — keep this layer stable so it's rarely rebuilt
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        ca-certificates \
+        curl \
+        tini \
+    && rm -rf /var/lib/apt/lists/*
+
+# Non-root user, fixed UID/GID for predictable K8s securityContext
+RUN groupadd --gid 1000 appuser \
+    && useradd --uid 1000 --gid appuser --shell /bin/bash --create-home appuser
+
+WORKDIR /home/appuser
+USER appuser
+
+ENTRYPOINT ["tini", "--"]
+

images/jupyter/dockerfile

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+ARG BASE_IMAGE=registry.bouvais.lu/tenant-base:1.0.0
+FROM ${BASE_IMAGE}
+
+LABEL org.opencontainers.image.title="tenant-jupyter" \
+      org.opencontainers.image.description="JupyterLab image built on tenant-base" \
+      org.opencontainers.image.base.name="${BASE_IMAGE}"
+
+USER root
+COPY --chown=appuser:appuser requirements.txt /tmp/requirements.txt
+RUN pip install --no-cache-dir -r /tmp/requirements.txt \
+    && rm /tmp/requirements.txt
+
+# No secrets baked in — S3 creds come from a mounted K8s Secret / env at runtime
+USER appuser
+WORKDIR /home/appuser/work
+
+EXPOSE 8888
+
+CMD ["jupyter", "lab", \
+     "--ip=0.0.0.0", \
+     "--port=8888", \
+     "--no-browser", \
+     "--ServerApp.token=", \
+     "--ServerApp.allow_remote_access=True"]

images/jupyter/requirements.txt

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+jupyterlab==4.2.5
+boto3==1.35.0
+s3fs==2024.9.0
+pandas==2.2.2