installed supervisor. Still need to set tasks to run in foreground.

Dockerfile

@@ -47,6 +47,7 @@ RUN apt-get update -q --fix-missing && \
     rsyslog \
     sasl2-bin \
     spamassassin \
+    supervisor \
     postgrey \
     unzip \
     && \
@@ -133,6 +134,9 @@ COPY target/opendmarc/ignore.hosts /etc/opendmarc/ignore.hosts
 COPY target/fetchmail/fetchmailrc /etc/fetchmailrc_general
 RUN sed -i 's/START_DAEMON=no/START_DAEMON=yes/g' /etc/default/fetchmail
 
+# Configure supervisor
+COPY target/supervisor/supervisor-app.conf /etc/supervisor/conf.d/
+
 # Configures Postfix
 COPY target/postfix/main.cf target/postfix/master.cf /etc/postfix/
 RUN echo "" > /etc/aliases && \

target/start-mailserver.sh

@@ -1124,17 +1124,17 @@ function start_daemons() {
 
 function _start_daemons_cron() {
 	notify 'task' 'Starting cron' 'n'
-	display_startup_daemon "cron"
+    supervisorctl start cron
 }
 
 function _start_daemons_rsyslog() {
 	notify 'task' 'Starting rsyslog' 'n'
-	display_startup_daemon "/etc/init.d/rsyslog start"
+    supervisorctl start rsyslog
 }
 
 function _start_daemons_saslauthd() {
 	notify 'task' 'Starting saslauthd' 'n'
-	display_startup_daemon "/etc/init.d/saslauthd start"
+    supervisorctl start saslauthd
 }
 
 function _start_daemons_fail2ban() {
@@ -1144,28 +1144,28 @@ function _start_daemons_fail2ban() {
 	if [ -e /var/run/fail2ban/fail2ban.sock ]; then
 		rm /var/run/fail2ban/fail2ban.sock
 	fi
-	display_startup_daemon "/etc/init.d/fail2ban start"
+    supervisorctl start fail2ban
 }
 
 function _start_daemons_opendkim() {
 	notify 'task' 'Starting opendkim' 'n'
-	display_startup_daemon "/etc/init.d/opendkim start"
+    supervisorctl start opendkim
 }
 
 function _start_daemons_opendmarc() {
 	notify 'task' 'Starting opendmarc' 'n'
-	display_startup_daemon "/etc/init.d/opendmarc start"
+    supervisorctl start opendmarc
 }
 
 function _start_daemons_postfix() {
 	notify 'task' 'Starting postfix' 'n'
-	display_startup_daemon "/etc/init.d/postfix start"
+    supervisorctl start postfix
 }
 
 function _start_daemons_dovecot() {
 	# Here we are starting sasl and imap, not pop3 because it's disabled by default
 	notify 'task' 'Starting dovecot services' 'n'
-	display_startup_daemon "/usr/sbin/dovecot -c /etc/dovecot/dovecot.conf"
+    supervisorctl start dovecot
 
 	if [ "$ENABLE_POP3" = 1 ]; then
 		notify 'task' 'Starting pop3 services' 'n'
@@ -1190,30 +1190,30 @@ function _start_daemons_dovecot() {
 
 function _start_daemons_filebeat() {
 	notify 'task' 'Starting filebeat' 'n'
-	display_startup_daemon "/etc/init.d/filebeat start"
+    supervisorctl start filebeat
 }
 
 function _start_daemons_fetchmail() {
 	notify 'task' 'Starting fetchmail' 'n'
 	/usr/local/bin/setup-fetchmail
-	display_startup_daemon "/etc/init.d/fetchmail start"
+    supervisorctl start fetchmail
 }
 
 function _start_daemons_clamav() {
 	notify 'task' 'Starting clamav' 'n'
-	display_startup_daemon "/etc/init.d/clamav-daemon start"
+    supervisorctl start clamav
 }
 
 function _start_daemons_postgrey() {
 	notify 'task' 'Starting postgrey' 'n'
 	rm -f /var/run/postgrey/postgrey.pid
-	display_startup_daemon "/etc/init.d/postgrey start"
+    supervisorctl start postgrey
 }
 
 
 function _start_daemons_amavis() {
 	notify 'task' 'Starting amavis' 'n'
-	display_startup_daemon "/etc/init.d/amavis start"
+    supervisorctl start amavis
 }
 
 ##########################################################################
@@ -1248,6 +1248,8 @@ notify 'taskgrp' "#"
 notify 'taskgrp' "#"
 notify 'taskgrp' ""
 
+supervisord
+
 register_functions
 
 check

target/supervisor/supervisor-app.conf

@@ -0,0 +1,83 @@
+# each program entry below is a separate terminal command.
+# Each command is expected to run in the foreground and stay running.
+# If the command ever exits, the supervisor daemon will automatically run it again.
+# Programs can be controlled like this: 'supervisorctl start fail2ban' 'supervisorctl stop fail2ban'
+# supervisor writes program statuses in /var/log/supervisor
+
+[program:cron]
+startsecs=0
+autostart=false
+autorestart=true
+command = /usr/sbin/cron
+
+[program:rsyslog]
+startsecs=0
+autostart=false
+autorestart=true
+command = /etc/init.d/rsyslog start
+
+[program:saslauthd]
+startsecs=0
+autostart=false
+autorestart=true
+command = /etc/init.d/saslauthd start
+
+[program:fail2ban]
+startsecs=0
+autostart=false
+autorestart=true
+command = /etc/init.d/fail2ban start
+
+[program:opendkim]
+startsecs=0
+autostart=false
+autorestart=true
+command = /etc/init.d/opendkim start
+
+[program:opendmarc]
+startsecs=0
+autostart=false
+autorestart=true
+command = /etc/init.d/opendmarc start
+
+[program:postfix]
+startsecs=0
+autostart=false
+autorestart=true
+command = /etc/init.d/postfix start
+
+[program:dovecot]
+startsecs=0
+autostart=false
+autorestart=true
+command = /usr/sbin/dovecot -c /etc/dovecot/dovecot.conf
+
+[program:filebeat]
+startsecs=0
+autostart=false
+autorestart=true
+command = /etc/init.d/filebeat start
+
+[program:fetchmail]
+startsecs=0
+autostart=false
+autorestart=true
+command = /etc/init.d/fetchmail start
+
+[program:clamav]
+startsecs=0
+autostart=false
+autorestart=true
+command = /etc/init.d/clamav-daemon start
+
+[program:postgrey]
+startsecs=0
+autostart=false
+autorestart=true
+command = /etc/init.d/postgrey start
+
+[program:amavis]
+startsecs=0
+autostart=false
+autorestart=true
+command = /etc/init.d/amavis start