需要 openSUSE Leap 15.6 ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/Documentation:Containers/openSUSE_Leap_15.6/Documentation:Containers.repo
zypper refresh
zypper install docbook-xsl-stylesheets
需要 openSUSE Leap 15.5 ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/Documentation:Containers/openSUSE_Leap_15.5/Documentation:Containers.repo
zypper refresh
zypper install docbook-xsl-stylesheets
需要 openSUSE Leap 15.4 ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/Documentation:Containers/openSUSE_Leap_15.4/Documentation:Containers.repo
zypper refresh
zypper install docbook-xsl-stylesheets