I don't think I had seen that fork before, thanks for the link. They appear to be much more up-to-date. There are still issues using Alpine as a development container. I ultimately resorted to a separate Ubuntu container for development, building against glibc. It was the only way to get VSCode's C++ and debugger extensions to work on aarch64. I don't love the workaround; using Ubuntu for everything would be nicer. I only use Alpine for test and release builds.