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docs/Dockerfile
Anthony LC 8afc003004 🐛(docker) switch CMD form from Shell to Exec
`backend-development` and `backend-production` CMD syntaxes were
using a Shell Form. Shell form prevented Unix signals from reaching
our container correctly, such as SIGTERM. Also, the shell process
ends up being the PID 1, instead of our Python scripts.

Docker recommends to use the exec form whenever possible.
2024-04-03 13:07:05 +02:00

140 lines
3.6 KiB
Docker

# Django impress
# ---- base image to inherit from ----
FROM python:3.10-slim-bookworm 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
# python3-pip python3-cffi python3-brotli \
RUN apt-get update && \
apt-get -y upgrade && \
apt-get -y install \
gettext \
libpango-1.0-0 libpangoft2-1.0-0 pango1.0-tools && \
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:18 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 rdfind
RUN apt-get update && \
apt-get install -y \
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 \
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
# 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 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 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"]