Do you want to reference a Static Resource in your Community Head Markup? This article describes how to reference this, what use-cases might be useful and two challenges I faced when referencing a Static Resource within a Community.
Challenges deploying Communities with SiteDotCom metadata type? Say no more and migrate to ExperienceBundles (GA per API 48.0)! Read about what this is and why to use it. But maybe even more important how to start leveraging this feature.