For openSUSE Leap 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Vogtinator:l-d-git/openSUSE_Leap_15.4/home:Vogtinator:l-d-git.repo
zypper refresh
zypper install latte-dock
For openSUSE Leap 15.3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Vogtinator:l-d-git/openSUSE_Leap_15.3/home:Vogtinator:l-d-git.repo
zypper refresh
zypper install latte-dock
For KDE Applications openSUSE Leap 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Vogtinator:l-d-git/KDE_Applications_openSUSE_Leap_15.4/home:Vogtinator:l-d-git.repo
zypper refresh
zypper install latte-dock
For KDE Applications openSUSE Leap 15.3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Vogtinator:l-d-git/KDE_Applications_openSUSE_Leap_15.3/home:Vogtinator:l-d-git.repo
zypper refresh
zypper install latte-dock