[Dovecot] Use events to kill supervisord when main proc dies

[Postfix] Use events to kill supervisord when main proc dies
[SOGo] Use events to kill supervisord when main proc dies

data/Dockerfiles/sogo/Dockerfile

@@ -40,13 +40,18 @@ RUN mkdir /usr/share/doc/sogo \
 	&& echo '0 0 * * *   sogo   /usr/sbin/sogo-tool update-autoreply -p /etc/sogo/sieve.creds' >> /etc/cron.d/sogo \
 	&& touch /etc/default/locale
 
-COPY ./bootstrap-sogo.sh /
+COPY ./bootstrap-sogo.sh /bootstrap-sogo.sh
 COPY syslog-ng.conf /etc/syslog-ng/syslog-ng.conf
 COPY supervisord.conf /etc/supervisor/supervisord.conf
 COPY theme-blue.js /usr/lib/GNUstep/SOGo/WebServerResources/js/theme-blue.js
 COPY theme-blue.css /usr/lib/GNUstep/SOGo/WebServerResources/css/theme-default.css
 COPY sogo-full.svg /usr/lib/GNUstep/SOGo/WebServerResources/img/sogo-full.svg
 COPY acl.diff /acl.diff
+COPY stop-supervisor.sh /usr/local/sbin/stop-supervisor.sh
+
+RUN chmod +x /bootstrap-sogo.sh \
+  /usr/local/sbin/stop-supervisor.sh
+
 CMD exec /usr/bin/supervisord -c /etc/supervisor/supervisord.conf
 
 VOLUME /usr/lib/GNUstep/SOGo/

data/Dockerfiles/sogo/stop-supervisor.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+printf "READY\n";
+
+while read line; do
+  echo "Processing Event: $line" >&2;
+  kill -3 $(cat "/var/run/supervisord.pid")
+done < /dev/stdin

data/Dockerfiles/sogo/supervisord.conf

@@ -26,3 +26,7 @@ priority=3
 startretries=10
 autorestart=true
 stopwaitsecs=120
+
+[eventlistener:processes]
+command=/usr/local/sbin/stop-supervisor.sh
+events=PROCESS_STATE_STOPPED, PROCESS_STATE_EXITED, PROCESS_STATE_FATAL