Change site.url and site.baseurl when building
Currently, site.url is
fdroid.gitlab.io. This makes neither sense in local development nor in forks – so if the site depends on it, e. g. fxedel.gitlab.io/fdroid-website could be broken while fdroid.gitlab.io/fdroid-website works which makes validating MRs very difficult.
Proposed solution: In .gitlab-ci.yml, create another config file including custom values for url and baseurl (which are project namespace and name and can be accessed using environment variables) and run the build command with both config files.