2 files changed, 2 insertions, 1 deletions
diff --git a/changelog.d/18294.docker b/changelog.d/18294.docker
new file mode 100644
index 0000000000..cc40ca90c0
--- /dev/null
+++ b/changelog.d/18294.docker
@@ -0,0 +1 @@
+Optimize the build of the complement-synapse image.
diff --git a/docker/complement/Dockerfile b/docker/complement/Dockerfile
index 3e7f808cc5..dd029c5fbc 100644
--- a/docker/complement/Dockerfile
+++ b/docker/complement/Dockerfile
@@ -25,7 +25,7 @@ FROM $FROM
 RUN adduser --system --uid 999 postgres --home /var/lib/postgresql
 COPY --from=postgres_base /usr/lib/postgresql /usr/lib/postgresql
 COPY --from=postgres_base /usr/share/postgresql /usr/share/postgresql
-RUN mkdir /var/run/postgresql && chown postgres /var/run/postgresql
+COPY --from=postgres_base --chown=postgres /var/run/postgresql /var/run/postgresql
 ENV PATH="${PATH}:/usr/lib/postgresql/13/bin"
 ENV PGDATA=/var/lib/postgresql/data