Unable to add printer in web interface

[jeffbrl]

I am running Docker version 1.1.2. When I try to add a printer, I get a "Add Printer Error", "Broken pipe" error.

E [18/Aug/2014:16:24:45 +0000] Unable to communicate with avahi-daemon: Daemon not running
E [18/Aug/2014:16:30:00 +0000] [CGI] CUPS-Get-Devices request failed with status 500: Broken pipe
E [18/Aug/2014:16:30:28 +0000] Unable to communicate with avahi-daemon: Daemon not running
E [18/Aug/2014:16:34:47 +0000] [CGI] CUPS-Get-Devices request failed with status 500: Broken pipe

I don't see avahi being installed in the Dockerfile.

[ticosax]

Yes Avahi is not running within this container.

The main reason is that I couldn't mount the dbus socket within the container.
Maybe with recent versions of docker it is now possible.
I didn't tried recently, because I do not need auto-discovery for my use-case.
You can try, if it works, the best I think is to run avahi in its own container then link avahi to cups container.
Then I'm willling to extend configuration of CUPS to reach avahi from its new location.
Assuming it is possible.

[jeffbrl]

I did notice a dbus error when docker builds the image.

• exec /usr/sbin/cupsd -f
  process 1: arguments to dbus_connection_unref() were incorrect, assertion "connection != NULL" failed in file ../../dbus/dbus-connection.c line 2794.
  This is normally a bug in some application using the D-Bus library.

I can get by without auto-discovery. Thanks for writing this software, ticosax.

[ticosax]

Last time I tried was in January 2014.
It means there is a chance it works now, since docker evolved a lot since.
Just give it a try, unfortunately I can't do it at the moment.

Autodiscovery might be a useful feature to have.