For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ojkastl_buildservice:OpenCloud/openSUSE_Tumbleweed/home:ojkastl_buildservice:OpenCloud.repo
zypper refresh
zypper install opencloud-server
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ojkastl_buildservice:OpenCloud/16.0/home:ojkastl_buildservice:OpenCloud.repo
zypper refresh
zypper install opencloud-server
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ojkastl_buildservice:OpenCloud/15.6/home:ojkastl_buildservice:OpenCloud.repo
zypper refresh
zypper install opencloud-server