Added config folder for Postfix

docker-compose.yml

@@ -47,6 +47,7 @@ services:
     volumes:
       - /freeposte/freeposte:/data
       - /freeposte/certs:/certs
+      - /freeposte/config/postfix:/config
 
   milter:
     build: rmilter

postfix/conf/main.cf

@@ -49,3 +49,7 @@ smtpd_milters = inet:milter:9900
 milter_protocol = 6
 milter_mail_macros = i {mail_addr} {client_addr} {client_name} {auth_authen}
 milter_default_action = tempfail
+
+###############
+# Extra Settings
+###############

postfix/start.sh

@@ -5,6 +5,25 @@ for VARIABLE in `env | cut -f1 -d=`; do
   sed -i "s={{ $VARIABLE }}=${!VARIABLE}=g" /etc/postfix/*.cf
 done
 
+# Override Postfix configuration
+if [ -f /config/main.cf ]; then
+  while read line; do
+    postconf -e "$line"
+  done < /config/main.cf
+  echo "Loaded 'config/main.cf'"
+else
+  echo "No extra postfix settings loaded because optional '/config/main.cf' not provided."
+fi
+
+# Include table-map files
+if [ "$(ls -A /config/*.map)" ]; then
+  cp /config/*.map /etc/postfix/
+  postmap /etc/postfix/*.map
+  rm /etc/postfix/*.map
+  chown root:root /etc/postfix/*.db
+  chmod 0600 /etc/postfix/*.db
+fi
+
 # Actually run Postfix
 rm -f /var/run/rsyslogd.pid
 /usr/lib/postfix/master &