fix: supervisor-app.conf - Correct the log location for postgrey (#3724)

* fix: `supervisor-app.conf` - Correct `postgrey` log location

Looks like this should have been like every other service and reference a log file(s) based on program name in the supervisor log directory.

* tests: Adjust log location for `postgrey_enabled.bats`

CHANGELOG.md

@@ -35,6 +35,7 @@ All notable changes to this project will be documented in this file. The format
   - `VERSION` is no longer included in the image ([#3711](https://github.com/docker-mailserver/docker-mailserver/pull/3711))
   - Update-check: fix 'read' exit status ([#3688](https://github.com/docker-mailserver/docker-mailserver/pull/3688))
   - `ENABLE_QUOTAS=0` no longer tries to remove non-existent config ([#3715](https://github.com/docker-mailserver/docker-mailserver/pull/3715))
+  - The `postgrey` service now writes logs to the supervisor directory like all other services. Previously this was `/var/log/mail/mail.log` ([#3724](https://github.com/docker-mailserver/docker-mailserver/pull/3724))
 - **Rspamd:**
   - Switch to official arm64 packages to avoid segfaults ([#3686](https://github.com/docker-mailserver/docker-mailserver/pull/3686))
 - **CI / Automation:**

target/supervisor/conf.d/supervisor-app.conf

@@ -83,8 +83,8 @@ startsecs=0
 stopwaitsecs=55
 autostart=false
 autorestart=true
-stdout_logfile=/var/log/mail/mail.log
-stderr_logfile=/var/log/mail/mail.log
+stdout_logfile=/var/log/supervisor/%(program_name)s.log
+stderr_logfile=/var/log/supervisor/%(program_name)s.log
 command=/usr/sbin/postgrey --inet=127.0.0.1:10023 --syslog-facility=mail --delay="%(ENV_POSTGREY_DELAY)s" --max-age="%(ENV_POSTGREY_MAX_AGE)s" --auto-whitelist-clients="%(ENV_POSTGREY_AUTO_WHITELIST_CLIENTS)s" --greylist-text="%(ENV_POSTGREY_TEXT)s"
 
 [program:amavis]

test/tests/parallel/set1/spam_virus/postgrey_enabled.bats

@@ -123,7 +123,7 @@ function _should_have_log_entry() {
   # Allow some extra time for logs to update to avoids a false-positive failure:
   _run_until_success_or_timeout 10 _exec_in_container grep \
     "${ACTION}, ${REASON}," \
-    /var/log/mail/mail.log
+    /var/log/supervisor/postgrey.log
 
   # Log entry matched should be for the expected triplet:
   assert_output --partial "${TRIPLET}"