I've just freshly reinstalled OMV5 on my server (previously running 3 and 4 for many years) and have tried to get CUPS back up and running in docker. I've tried four different docker images, including the suggested olbat/cupsd, but they all give me "internal server error" when I go to the administration page. Since they all do it I suspect there is an configuration issue on my OMV docker instance, but it is default running as omv-extras installs it. I've not been able to find any resolution elsewhere on the net.
I've already got OpenVPN, Plex, Transmission and Kerberos.io running in docker without issue.
Any assistance would be much appreciated.