chore(logwatch): Add `ignore.conf` to ignore logs from Dovecot `index-worker` (#4012)

CHANGELOG.md

@@ -93,6 +93,8 @@ The most noteworthy change of this release is the update of the container's base
   - The `rewrite_subject` action, is now disabled by default. It has been replaced with the new `SPAM_SUBJECT` environment variable, which implements the functionality via a Sieve script instead which is anti-spam service agnostic ([#3820](https://github.com/docker-mailserver/docker-mailserver/pull/3820))
   - `RSPAMD_NEURAL` was added and is disabled by default. If switched on it will enable the experimental Rspamd "Neural network" module to add a layer of analysis to spam detection ([#3833](https://github.com/docker-mailserver/docker-mailserver/pull/3833))
   - The symbol weights of SPF, DKIM and DMARC have been adjusted again. Fixes a bug and includes more appropriate combinations of symbols ([#3913](https://github.com/docker-mailserver/docker-mailserver/pull/3913), [#3923](https://github.com/docker-mailserver/docker-mailserver/pull/3923))
+- **Dovecot:**
+  - `logwatch` now filters out non-error logs related to the status of the `index-worker` process for FTS indexing. ([#4012](https://github.com/docker-mailserver/docker-mailserver/pull/4012))
 
 ### Fixes
 

Dockerfile

@@ -273,6 +273,7 @@ EOF
 # -----------------------------------------------
 
 COPY target/logwatch/maillog.conf /etc/logwatch/conf/logfiles/maillog.conf
+COPY target/logwatch/ignore.conf /etc/logwatch/conf/ignore.conf
 
 # -----------------------------------------------
 # --- Supervisord & Start -----------------------

target/logwatch/ignore.conf

@@ -0,0 +1,2 @@
+# ignore output from dovecot-fts-xapian about successfully indexed messages
+dovecot: indexer-worker\([^\)]+\).*Indexed