For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:illuusio/openSUSE_Tumbleweed/home:illuusio.repo
zypper refresh
zypper install ghc-language-docker
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:illuusio/openSUSE_Slowroll/home:illuusio.repo
zypper refresh
zypper install ghc-language-docker
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:illuusio/15.4/home:illuusio.repo
zypper refresh
zypper install ghc-language-docker