I'm kinda stuck here too.... Docker in GUI gone, trying to install openmediavault-docker-gui again gives me the error:
>>> *************** Error ***************Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C.UTF-8; export DEBIAN_FRONTEND=noninteractive; apt-get --yes --allow-downgrades --allow-change-held-packages --fix-missing --allow-unauthenticated --reinstall install openmediavault-docker-gui 2>&1' with exit code '100': Reading package lists...
Building dependency tree...
Reading state information...
Some packages could not be installed. This may mean that you haverequested an impossible situation or if you are using the unstabledistribution that some required packages have not yet been createdor been moved out of Incoming.The following information may help to resolve the situation:
The following packages have unmet dependencies: openmediavault-docker-gui : Depends: openmediavault-omvextrasorg (>= 4.1.15) but 4.1.13 is to be installedE: Unable to correct problems, you have held broken packages.<<< *************************************
Cannot install version 4.1.5. What now?