trefex/cups-syno-hl3070cw

CUPS Synology container with driver for Brother HL-3070CW pre-installed based on quadportnick/cups-airprint. This CentOS 7 based image runs a CUPS instance that is meant as an AirPrint relay for printers that are already on the network but not AirPrint capable.

Note: This works only on Synology DSM NAS devices, as we use the avahi daemon from the NAS.

Prereqs

• No other printers should be shared under Control Panel>External Devices>Printer so that the DSM's CUPS is not running.
• Enable Bonjour service discovery needs to be marked under Control Panel>Network>DSM Settings

Configuration

Volumes:

• /config: where the persistent printer configs will be stored
• /services: where the Avahi service files will be generated

Variables:

• CUPSADMIN: the CUPS admin user you want created
• CUPSPASSWORD: the password for the CUPS admin user

Network:

• Use Host network.

Ports:

• 631: the TCP port for CUPS must be exposed

Using

CUPS will be configurable at http://[diskstation]:631 using the CUPSADMIN/CUPSPASSWORD when you do something administrative.

If the /services volume isn't mapping to /etc/avahi/services then you will have to manually copy the .service files to that path at the command line.

Notes

• CUPS doesn't write out printers.conf immediately when making changes even though they're live in CUPS. Therefore it will take a few moments before the services files update
• Don't stop the container immediately if you intend to have a persistent configuration for this same reason