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20 lines
1.2 KiB
Markdown
20 lines
1.2 KiB
Markdown
# QuadPortNick/cups-airprint
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This Ubuntu-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. I'm using it on a Synology NAS because for whatever reason the built in functionality is broken. So here we are...
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The Synology's CUPS is turned off and the local Avahi will be utilized for advertising the printers on the network.
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## Setting it up
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~~~
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docker build -t QuadPortNick/cups-airprint .
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mkdir -p /volume1/docker/cups-airprint
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docker create --name cups-airprint -e CUPSADMIN=cups -e CUPSPASSWORD=cupZZZ! -v /volume1/docker/cups-airprint:/config -v /etc/avahi/services:/services -p 631:631 QuadPortNick/cups-airprint
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~~~
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Now set auto-start in the Synology DSM interface and start the container. CUPS will be configurable at http://[diskstation]:631 using the CUPSADMIN/CUPSPASSWORD when needed.
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## Notes
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* CUPS doesn't like printers.conf being mounted directly as it appears to delete/recreate it with changes, so we copy it in on start and then watch for it to change to make a backup of it.
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* Watching for the printers.conf file changing also triggers generating the Avahi services. Thanks to @thfontaine for the script! <https://github.com/tjfontaine/airprint-generate>
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