Docker: copy postgres from base image (#13279)

When building the docker images for complement testing, copy a preinstalled
complement over from a base image, rather than apt installing it. This avoids
network traffic and is much faster.
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Richard van der Hoff 2022-07-15 11:13:40 +01:00 committed by GitHub
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3 changed files with 48 additions and 31 deletions

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Reduce the rebuild time for the complement-synapse docker image.

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#
# Instructions for building this image from those it depends on is detailed in this guide:
# https://github.com/matrix-org/synapse/blob/develop/docker/README-testing.md#testing-with-postgresql-and-single-or-multi-process-synapse
ARG SYNAPSE_VERSION=latest
# first of all, we create a base image with a postgres server and database,
# which we can copy into the target image. For repeated rebuilds, this is
# much faster than apt installing postgres each time.
#
# This trick only works because (a) the Synapse image happens to have all the
# shared libraries that postgres wants, (b) we use a postgres image based on
# the same debian version as Synapse's docker image (so the versions of the
# shared libraries match).
FROM postgres:13-bullseye AS postgres_base
# initialise the database cluster in /var/lib/postgresql
RUN gosu postgres initdb --locale=C --encoding=UTF-8 --auth-host password
# Configure a password and create a database for Synapse
RUN echo "ALTER USER postgres PASSWORD 'somesecret'" | gosu postgres postgres --single
RUN echo "CREATE DATABASE synapse" | gosu postgres postgres --single
# now build the final image, based on the Synapse image.
FROM matrixdotorg/synapse-workers:$SYNAPSE_VERSION
# copy the postgres installation over from the image we built above
RUN adduser --system --uid 999 postgres --home /var/lib/postgresql
COPY --from=postgres_base /var/lib/postgresql /var/lib/postgresql
COPY --from=postgres_base /usr/lib/postgresql /usr/lib/postgresql
COPY --from=postgres_base /usr/share/postgresql /usr/share/postgresql
RUN mkdir /var/run/postgresql && chown postgres /var/run/postgresql
ENV PATH="${PATH}:/usr/lib/postgresql/13/bin"
ENV PGDATA=/var/lib/postgresql/data
# Install postgresql
RUN apt-get update && \
DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -yqq postgresql-13
# Extend the shared homeserver config to disable rate-limiting,
# set Complement's static shared secret, enable registration, amongst other
# tweaks to get Synapse ready for testing.
# To do this, we copy the old template out of the way and then include it
# with Jinja2.
RUN mv /conf/shared.yaml.j2 /conf/shared-orig.yaml.j2
COPY conf/workers-shared-extra.yaml.j2 /conf/shared.yaml.j2
# Configure a user and create a database for Synapse
RUN pg_ctlcluster 13 main start && su postgres -c "echo \
\"ALTER USER postgres PASSWORD 'somesecret'; \
CREATE DATABASE synapse \
ENCODING 'UTF8' \
LC_COLLATE='C' \
LC_CTYPE='C' \
template=template0;\" | psql" && pg_ctlcluster 13 main stop
WORKDIR /data
# Extend the shared homeserver config to disable rate-limiting,
# set Complement's static shared secret, enable registration, amongst other
# tweaks to get Synapse ready for testing.
# To do this, we copy the old template out of the way and then include it
# with Jinja2.
RUN mv /conf/shared.yaml.j2 /conf/shared-orig.yaml.j2
COPY conf/workers-shared-extra.yaml.j2 /conf/shared.yaml.j2
COPY conf/postgres.supervisord.conf /etc/supervisor/conf.d/postgres.conf
WORKDIR /data
# Copy the entrypoint
COPY conf/start_for_complement.sh /
COPY conf/postgres.supervisord.conf /etc/supervisor/conf.d/postgres.conf
# Expose nginx's listener ports
EXPOSE 8008 8448
# Copy the entrypoint
COPY conf/start_for_complement.sh /
ENTRYPOINT ["/start_for_complement.sh"]
# Expose nginx's listener ports
EXPOSE 8008 8448
ENTRYPOINT ["/start_for_complement.sh"]
# Update the healthcheck to have a shorter check interval
HEALTHCHECK --start-period=5s --interval=1s --timeout=1s \
CMD /bin/sh /healthcheck.sh
# Update the healthcheck to have a shorter check interval
HEALTHCHECK --start-period=5s --interval=1s --timeout=1s \
CMD /bin/sh /healthcheck.sh

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[program:postgres]
command=/usr/local/bin/prefix-log /usr/bin/pg_ctlcluster 13 main start --foreground
command=/usr/local/bin/prefix-log gosu postgres postgres
# Only start if START_POSTGRES=1
autostart=%(ENV_START_POSTGRES)s