deb http://download.opensuse.org/repositories/home:/strycore/xUbuntu_17.10/ ./ code example
Example: install lutris ubuntu
$ sudo apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ focal main'
$ sudo apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ focal main'