对于 openSUSE Tumbleweed，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/home:david_kang/openSUSE_Tumbleweed/home:david_kang.repo
zypper refresh
zypper install rubygem-dotenv
对于 openSUSE Leap 15.2，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/home:david_kang/openSUSE_Leap_15.2/home:david_kang.repo
zypper refresh
zypper install rubygem-dotenv
对于 openSUSE Leap 15.1，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/home:david_kang/openSUSE_Leap_15.1/home:david_kang.repo
zypper refresh
zypper install rubygem-dotenv