postfix: added master.pid removal and startsecs to supervisord (#6284)

data/Dockerfiles/postfix/postfix.sh

@@ -509,6 +509,11 @@ chgrp -R postdrop /var/spool/postfix/public
 chgrp -R postdrop /var/spool/postfix/maildrop
 postfix set-permissions
 
+# Checking if there is a leftover of a crashed postfix container before starting a new one
+if [ -e /var/spool/postfix/pid/master.pid ]; then
+  rm -rf /var/spool/postfix/pid/master.pid
+fi
+
 # Check Postfix configuration
 postconf -c /opt/postfix/conf > /dev/null
 

data/Dockerfiles/postfix/supervisord.conf

@@ -18,6 +18,7 @@ stdout_logfile_maxbytes=0
 stderr_logfile=/dev/stderr
 stderr_logfile_maxbytes=0
 autorestart=true
+startsecs=10
 
 [eventlistener:processes]
 command=/usr/local/sbin/stop-supervisor.sh