synapse/docker/Dockerfile-workers

# Inherit from the official Synapse docker image
ARG SYNAPSE_VERSION=latest
FROM matrixdotorg/synapse:$SYNAPSE_VERSION

# Install deps
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 \
     redis-server nginx-light

# Install supervisord with pip instead of apt, to avoid installing a second
# copy of python.
RUN --mount=type=cache,target=/root/.cache/pip \
    pip install supervisor~=4.2

# Disable the default nginx sites
RUN rm /etc/nginx/sites-enabled/default

# 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 /bin/sh /healthcheck.sh