synapse/docker/Dockerfile-workers

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# syntax=docker/dockerfile:1-labs
ARG SYNAPSE_VERSION=latest
ARG FROM=matrixdotorg/synapse:$SYNAPSE_VERSION
ARG DEBIAN_VERSION=trixie
ARG PYTHON_VERSION=3.13
ARG REDIS_VERSION=7.2
# first of all, we create a base image with dependencies which we can copy into the
# target image. For repeated rebuilds, this is much faster than apt installing
# each time.
FROM ghcr.io/astral-sh/uv:python${PYTHON_VERSION}-${DEBIAN_VERSION} AS deps_base
ARG DEBIAN_VERSION
ARG REDIS_VERSION
# Tell apt to keep downloaded package files, as we're using cache mounts.
RUN rm -f /etc/apt/apt.conf.d/docker-clean; echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.conf.d/keep-cache
# The upstream redis-server deb has fewer dynamic libraries than Debian's package which makes it easier to copy later on
RUN \
curl -fsSL https://packages.redis.io/gpg | gpg --dearmor -o /usr/share/keyrings/redis-archive-keyring.gpg && \
chmod 644 /usr/share/keyrings/redis-archive-keyring.gpg && \
echo "deb [signed-by=/usr/share/keyrings/redis-archive-keyring.gpg] https://packages.redis.io/deb ${DEBIAN_VERSION} main" | tee /etc/apt/sources.list.d/redis.list
RUN \
--mount=type=cache,target=/var/cache/apt,sharing=locked \
--mount=type=cache,target=/var/lib/apt,sharing=locked \
apt-get update -qq && \
DEBIAN_FRONTEND=noninteractive apt-get install -yqq --no-install-recommends \
nginx-light \
redis-server="6:${REDIS_VERSION}.*" redis-tools="6:${REDIS_VERSION}.*" \
# libicu is required by postgres, see `docker/complement/Dockerfile`
libicu76
RUN \
# remove default page
rm /etc/nginx/sites-enabled/default && \
# have nginx log to stderr/out
ln -sf /dev/stdout /var/log/nginx/access.log && \
ln -sf /dev/stderr /var/log/nginx/error.log
# --link-mode=copy silences a warning as uv isn't able to do hardlinks between its cache
# (mounted as --mount=type=cache) and the target directory.
RUN --mount=type=cache,target=/root/.cache/uv \
uv pip install --link-mode=copy --prefix="/uv/usr/local" supervisor~=4.2
RUN mkdir -p /uv/etc/supervisor/conf.d
# now build the final image, based on the the regular Synapse docker image
FROM $FROM
# Copy over dependencies
COPY --from=deps_base --parents /usr/lib/*-linux-gnu/libicu* /
COPY --from=deps_base /usr/bin/redis-server /usr/local/bin
COPY --from=deps_base /uv /
COPY --from=deps_base /usr/sbin/nginx /usr/sbin
COPY --from=deps_base /usr/share/nginx /usr/share/nginx
COPY --from=deps_base /usr/lib/nginx /usr/lib/nginx
COPY --from=deps_base /etc/nginx /etc/nginx
COPY --from=deps_base /var/log/nginx /var/log/nginx
# chown to allow non-root user to write to http-*-temp-path dirs
COPY --from=deps_base --chown=www-data:root /var/lib/nginx /var/lib/nginx
# Copy Synapse worker, nginx and supervisord configuration template files
COPY ./docker/conf-workers/* /conf/
# Copy a script to prefix log lines with the supervisor program name
COPY ./docker/prefix-log /usr/local/bin/
# Expose nginx listener port
EXPOSE 8080/tcp
# A script to read environment variables and create the necessary
# files to run the desired worker configuration. Will start supervisord.
COPY ./docker/configure_workers_and_start.py /configure_workers_and_start.py
ENTRYPOINT ["/configure_workers_and_start.py"]
# Replace the healthcheck with one which checks *all* the workers. The script
# is generated by configure_workers_and_start.py.
HEALTHCHECK --start-period=5s --interval=15s --timeout=5s \
CMD ["/healthcheck.sh"]