UCS Nextcloud Docker Container: Configure fulltextsearch:live

Thank you very much for your hint. I will set up Nextcloud directly within UCS, without using the docker image from the UCS App Store. However, I have some difficulties to setup LDAP in a similar way as I would like to add the parameters nextcloudUser, nextcloudGroup and nextcloudQuota to the LDAP directory. Please see #11715