gitlab-ci: Re-use docker image from the main repo in forked repos
Instead of generating it from scratch in each forked repo. This should save time, energy and storage. (The xserver & xf86-video-amdgpu CI scripts do basically the same)
Instead of generating it from scratch in each forked repo. This should save time, energy and storage. (The xserver & xf86-video-amdgpu CI scripts do basically the same)