For openSUSE Leap 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:containers/openSUSE_Leap_15.4/Virtualization:containers.repo
zypper refresh
zypper install umoci
For openSUSE Leap 15.3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:containers/openSUSE_Leap_15.3/Virtualization:containers.repo
zypper refresh
zypper install umoci
For SLE 15 SP2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:containers/SLE_15_SP2/Virtualization:containers.repo
zypper refresh
zypper install umoci
For SLE 15 SP1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:containers/SLE_15_SP1/Virtualization:containers.repo
zypper refresh
zypper install umoci
For SLE 12 SP5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:containers/SLE_12_SP5/Virtualization:containers.repo
zypper refresh
zypper install umoci
For SLE 12 SP4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:containers/SLE_12_SP4/Virtualization:containers.repo
zypper refresh
zypper install umoci