For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Manami:nginx-modules/openSUSE_Tumbleweed/home:Manami:nginx-modules.repo
zypper refresh
zypper install nginx-module-acme
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Manami:nginx-modules/openSUSE_Slowroll/home:Manami:nginx-modules.repo
zypper refresh
zypper install nginx-module-acme
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Manami:nginx-modules/16.0/home:Manami:nginx-modules.repo
zypper refresh
zypper install nginx-module-acme