[CE/SP] Flush redis on docker stop (#11714)

* [CE/SP] Flush redis on `docker stop`

* Extracted `limit` to variable

Co-authored-by: Jakob Ackermann <jakob.ackermann@overleaf.com>

* Increased logging

---------

Co-authored-by: Jakob Ackermann <jakob.ackermann@overleaf.com>
GitOrigin-RevId: 4bcb4e70988337369acca0e80f243609bd6323ed

server-ce/Dockerfile

@@ -52,9 +52,10 @@ ADD server-ce/cron /overleaf/cron
 ADD server-ce/config/crontab-history /etc/cron.d/crontab-history
 RUN chmod 600 /etc/cron.d/crontab-history
 
-# Copy Phusion Image startup scripts to its location
-# --------------------------------------------------
+# Copy Phusion Image startup and shutdown scripts to their locations
+# ------------------------------------------------------------------
 COPY server-ce/init_scripts/ /etc/my_init.d/
+COPY server-ce/init_preshutdown_scripts/ /etc/my_init.pre_shutdown.d/
 
 # Copy app settings files
 # -----------------------

server-ce/init_preshutdown_scripts/01_flush_project_history

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+cd /overleaf/services/project-history && node scripts/flush_all.js >> /var/log/sharelatex/project-history.log 2>&1
+
+EXIT_CODE="$?"
+if [ $EXIT_CODE -ne 0 ]
+then
+  echo "project-history/scripts/flush_all.js failed with exit code $EXIT_CODE"
+fi
+
+exit 0

server-ce/init_preshutdown_scripts/01_flush_track_changes

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+cd /overleaf/services/track-changes && node scripts/flush_all.js >> /var/log/sharelatex/track-changes.log 2>&1
+
+EXIT_CODE="$?"
+if [ $EXIT_CODE -ne 0 ]
+then
+  echo "track-changes/scripts/flush_all.js failed with exit code $EXIT_CODE"
+fi
+
+exit 0

server-ce/init_preshutdown_scripts/02_flush_document_updater

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+cd /overleaf/services/document-updater && node scripts/flush_all.js >> /var/log/sharelatex/document-updater.log 2>&1
+
+EXIT_CODE="$?"
+if [ $EXIT_CODE -ne 0 ]
+then
+  echo "document-updater/scripts/flush_all.js failed with exit code $EXIT_CODE"
+fi
+
+exit 0