Hey,
thanks, but I misinterpreted the error message. OC is verifying the checksum of several files in its installation folder against a list of known checksums. In this case it’s the CA certificate bundle file that fails the check. Did you modify that file, e.g. by adding the UCS CA certificate? You can try figuring out what the difference is between your copy of the file and a pristine one by downloading the OC installation source tarball from the OC website. You can copy the file OC complains about from the docker container to the host with something like this:
docker cp $(ucr get appcenter/apps/owncloud/container):/var/www/owncloud/resources/config/ca-bundle.crt /tmp/
Kind regards,
mosu