✨(project) Django boilerplate

This commit introduces a boilerplate inspired by https://github.com/numerique-gouv/impress.
The code has been cleaned to remove unnecessary Impress logic and dependencies.

Changes made:
- Removed Minio, WebRTC, and create bucket from the stack.
- Removed the Next.js frontend (it will be replaced by Vite).
- Cleaned up impress-specific backend logics.

The whole stack remains functional:
- All tests pass.
- Linter checks pass.
- Agent Connexion sources are already set-up.

Why clear out the code?

To adhere to the KISS principle, we aim to maintain a minimalist codebase. Cloning Impress
allowed us to quickly inherit its code quality tools and deployment configurations for staging,
pre-production, and production environments.

What’s broken?
- The tsclient is not functional anymore.
- Some make commands need to be fixed.
- Helm sources are outdated.
- Naming across the project sources are inconsistent (impress, visio, etc.)
- CI is not configured properly.

This list might be incomplete. Let's grind it.

Dockerfile

@@ -0,0 +1,150 @@
+# Django impress
+
+# ---- base image to inherit from ----
+FROM python:3.10-slim-bullseye as base
+
+# Upgrade pip to its latest release to speed up dependencies installation
+RUN python -m pip install --upgrade pip
+
+# Upgrade system packages to install security updates
+RUN apt-get update && \
+  apt-get -y upgrade && \
+  rm -rf /var/lib/apt/lists/*
+
+# ---- Back-end builder image ----
+FROM base as back-builder
+
+WORKDIR /builder
+
+# Copy required python dependencies
+COPY ./src/backend /builder
+
+RUN mkdir /install && \
+  pip install --prefix=/install .
+
+
+# ---- mails ----
+FROM node:20 as mail-builder
+
+COPY ./src/mail /mail/app
+
+WORKDIR /mail/app
+
+RUN yarn install --frozen-lockfile && \
+    yarn build
+
+
+# ---- static link collector ----
+FROM base as link-collector
+ARG IMPRESS_STATIC_ROOT=/data/static
+
+# Install libpangocairo & rdfind
+RUN apt-get update && \
+    apt-get install -y \
+      libpangocairo-1.0-0 \
+      rdfind && \
+    rm -rf /var/lib/apt/lists/*
+
+# Copy installed python dependencies
+COPY --from=back-builder /install /usr/local
+
+# Copy impress application (see .dockerignore)
+COPY ./src/backend /app/
+
+WORKDIR /app
+
+# collectstatic
+RUN DJANGO_CONFIGURATION=Build DJANGO_JWT_PRIVATE_SIGNING_KEY=Dummy \
+    python manage.py collectstatic --noinput
+
+# Replace duplicated file by a symlink to decrease the overall size of the
+# final image
+RUN rdfind -makesymlinks true -followsymlinks true -makeresultsfile false ${IMPRESS_STATIC_ROOT}
+
+# ---- Core application image ----
+FROM base as core
+
+ENV PYTHONUNBUFFERED=1
+
+# Install required system libs
+RUN apt-get update && \
+    apt-get install -y \
+      gettext \
+      libcairo2 \
+      libffi-dev \
+      libgdk-pixbuf2.0-0 \
+      libpango-1.0-0 \
+      libpangocairo-1.0-0 \
+      shared-mime-info && \
+  rm -rf /var/lib/apt/lists/*
+
+# Copy entrypoint
+COPY ./docker/files/usr/local/bin/entrypoint /usr/local/bin/entrypoint
+
+# Give the "root" group the same permissions as the "root" user on /etc/passwd
+# to allow a user belonging to the root group to add new users; typically the
+# docker user (see entrypoint).
+RUN chmod g=u /etc/passwd
+
+# Copy installed python dependencies
+COPY --from=back-builder /install /usr/local
+
+# Copy impress application (see .dockerignore)
+COPY ./src/backend /app/
+
+WORKDIR /app
+
+# We wrap commands run in this container by the following entrypoint that
+# creates a user on-the-fly with the container user ID (see USER) and root group
+# ID.
+ENTRYPOINT [ "/usr/local/bin/entrypoint" ]
+
+# ---- Development image ----
+FROM core as backend-development
+
+# Switch back to the root user to install development dependencies
+USER root:root
+
+# Install psql
+RUN apt-get update && \
+    apt-get install -y postgresql-client && \
+    rm -rf /var/lib/apt/lists/*
+
+# Uninstall impress and re-install it in editable mode along with development
+# dependencies
+RUN pip uninstall -y impress
+RUN pip install -e .[dev]
+
+# Restore the un-privileged user running the application
+ARG DOCKER_USER
+USER ${DOCKER_USER}
+
+# Target database host (e.g. database engine following docker compose services
+# name) & port
+ENV DB_HOST=postgresql \
+    DB_PORT=5432
+
+# Run django development server
+CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]
+
+# ---- Production image ----
+FROM core as backend-production
+
+ARG IMPRESS_STATIC_ROOT=/data/static
+
+# Gunicorn
+RUN mkdir -p /usr/local/etc/gunicorn
+COPY docker/files/usr/local/etc/gunicorn/impress.py /usr/local/etc/gunicorn/impress.py
+
+# Un-privileged user running the application
+ARG DOCKER_USER
+USER ${DOCKER_USER}
+
+# Copy statics
+COPY --from=link-collector ${IMPRESS_STATIC_ROOT} ${IMPRESS_STATIC_ROOT}
+
+# Copy impress mails
+COPY --from=mail-builder /mail/backend/core/templates/mail /app/core/templates/mail
+
+# The default command runs gunicorn WSGI server in impress's main module
+CMD ["gunicorn", "-c", "/usr/local/etc/gunicorn/impress.py", "impress.wsgi:application"]