fix: use new ipv4 subnet

Dockerfile

@@ -28,6 +28,7 @@ COPY --from=build /usr/share/zoneinfo/UTC /etc/localtime
 
 # Create directories
 RUN install -dm 2750 -o root -g root /etc/monit.d
+RUN install -dm 2750 -o root -g root /etc/monit.d/external/
 RUN install -dm 2750 -o root -g root /var/lib/monit
 
 # Install config

monitrc

@@ -18,3 +18,4 @@ check program zeroconf
   if status = 0 then unmonitor
 
 include /etc/monit.d/*.conf
+include /etc/monit.d/external/*.conf

zeroconf.conf

@@ -1,5 +1,5 @@
 set mmonit http://@@MMONIT@@/collector
-set mailserver postfix port 25 using hostname @@HOSTNAME@@
+set mailserver @@POSTFIX@@ port 25 using hostname @@HOSTNAME@@
 
 set alert @@EMAIL@@
 
@@ -11,6 +11,6 @@ set mail-format {
 
 set httpd port 2812
   allow localhost
-  allow 172.0.0.0/8
+  allow 10.13.12.0/24
   allow "fd00:acab::/32"
   allow @@CREDENTIALS@@

zeroconf.sh

@@ -13,6 +13,7 @@ sed -re "s/@@EMAIL@@/${EMAIL}/" \
      -e "s/@@HOSTNAME@@/${EMAIL_FROM#*@}/" \
      -e "s/@@MMONIT@@/${MMONIT}/" \
      -e "s/@@CREDENTIALS@@/${CREDENTIALS}/" \
+     -e "s/@@POSTFIX@@/${POSTFIX:-postfix}/" \
      /etc/zeroconf.conf > /etc/monit.d/zeroconf.conf
 
 monit -t