Removed dbus configuration and added avahi reload.

Dockerfile

@@ -32,6 +32,7 @@ RUN sed -i 's/Listen localhost:631/Listen 0.0.0.0:631/' /etc/cups/cupsd.conf &&
 	sed -i 's/<Location \/>/<Location \/>\n  Allow All/' /etc/cups/cupsd.conf && \
 	sed -i 's/<Location \/admin>/<Location \/admin>\n  Allow All\n  Require user @SYSTEM/' /etc/cups/cupsd.conf && \
 	sed -i 's/<Location \/admin\/conf>/<Location \/admin\/conf>\n  Allow All/' /etc/cups/cupsd.conf && \
+	sed -i 's/.*enable\-dbus=.*/enable\-dbus\=no/' /etc/avahi/avahi-daemon.conf && \
 	echo "ServerAlias *" >> /etc/cups/cupsd.conf && \
 	echo "DefaultEncryption Never" >> /etc/cups/cupsd.conf
 

README.md

@@ -14,29 +14,19 @@ This Ubuntu-based Docker image runs a CUPS instance that is meant as an AirPrint
 * `CUPSADMIN`: the CUPS admin user you want created
 * `CUPSPASSWORD`: the password for the CUPS admin user
 
-### Ports:
-* `631`: the TCP port for CUPS must be exposed
+### Ports/Network:
+* Must be run on host network. This is required to support multicasting which is needed for Airprint.
 
 ### Example run command:
 ```
-docker run --name cups -p 631:631   --restart unless-stopped  \
+docker run --name cups --restart unless-stopped  --net host\
   -v <your services dir>:/services \
   -v <your config dir>:/config \
-  -v /var/run/dbus:/var/run/dbus \
   -e CUPSADMIN="<username>" \
   -e CUPSPASSWORD="<password>" \
   chuckcharlie/cups-airprint-brother:latest
 ```
 
-## Install Avahi on local host:
-These commands only work on RedHat/CentOS/Fedora. Ubuntu will be different.
-```
-yum install avahi
-systemctl start avahi-daemon
-systemctl enable avahi-daemon
-```
-***This was the only way I was able to get /var/run/dbus to respond correctly in the container.***
-
 ## Add and set up printer:
 CUPS will be configurable at http://[host ip]:631 using the CUPSADMIN/CUPSPASSWORD.
 

root/root/printer-update.sh

@@ -3,7 +3,10 @@ inotifywait -m -e close_write,moved_to,create /etc/cups |
 while read -r directory events filename; do
 	if [ "$filename" = "printers.conf" ]; then
 		rm -rf /services/AirPrint-*.service
+		rm -rf /etc/avahi/services/AirPrint-*.service
 		/root/airprint-generate.py -d /services
 		cp /etc/cups/printers.conf /config/printers.conf
+		cp -f /services/AirPrint-*.service /etc/avahi/services/ &
+		/usr/sbin/avahi-daemon --reload
 	fi
 done

root/root/run_cups.sh

@@ -11,10 +11,12 @@ mkdir -p /config/ppd
 mkdir -p /services
 rm -rf /etc/cups/ppd
 ln -s /config/ppd /etc/cups
+cp -f /services/*.service /etc/avahi/services/
 if [ ! -f /config/printers.conf ]; then
     touch /config/printers.conf
 fi
 cp /config/printers.conf /etc/cups/printers.conf
 
 /root/printer-update.sh &
+/usr/sbin/avahi-daemon &
 exec /usr/sbin/cupsd -f