From 51436c8dd531b18403d175fc47e5d863af8f4fd7 Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Date: Wed, 5 Oct 2022 17:37:34 +0100
Subject: [PATCH] Complement test image: capture logs from nginx (#14063)

Have nginx send its logs to stderr/out, so that we can debug
https://github.com/matrix-org/synapse/issues/13334.
---
 changelog.d/14063.misc    | 1 +
 docker/Dockerfile-workers | 6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 changelog.d/14063.misc

diff --git a/changelog.d/14063.misc b/changelog.d/14063.misc
new file mode 100644
index 0000000000..f0d1e47f1a
--- /dev/null
+++ b/changelog.d/14063.misc
@@ -0,0 +1 @@
+Complement test image: capture logs from nginx.
diff --git a/docker/Dockerfile-workers b/docker/Dockerfile-workers
index 003a1cc3bf..0c2d4f3047 100644
--- a/docker/Dockerfile-workers
+++ b/docker/Dockerfile-workers
@@ -40,7 +40,11 @@ FROM matrixdotorg/synapse:$SYNAPSE_VERSION
     COPY --from=deps_base /etc/nginx /etc/nginx
     RUN rm /etc/nginx/sites-enabled/default
     RUN mkdir /var/log/nginx /var/lib/nginx
-    RUN chown www-data /var/log/nginx /var/lib/nginx
+    RUN chown www-data /var/lib/nginx
+
+    # have nginx log to stderr/out
+    RUN ln -sf /dev/stdout /var/log/nginx/access.log
+    RUN ln -sf /dev/stderr /var/log/nginx/error.log
 
     # Copy Synapse worker, nginx and supervisord configuration template files
     COPY ./docker/conf-workers/* /conf/