Yeah, some in the community have worked on non-Ubuntu Swift releases, but Alpine seems like a stretch because of the non-standard Linux libraries it ships with.
@IOOI Not sure what you mean by final word; I am just stating the fact that official support stops at Ubuntu and Ubuntu-slim docker images (as of now, subject to change in the future). Beyond that, the community has had some success with other distributions but not Alpine per se to my knowledge.