Alpine Linux is supported as a distribution and is included in tests, however it returns an empty string for the OS Family. While Alpine doesn't have many derivatives at this time, it is used enough in use cases like containers that for consistency and ease Family should return alpine just like you get debian for the family if you run it on debian
Currently there's a mapping for Linux distributions to families; E.G. Ubuntu and Rasbian are in the Debian family, CentOs and Fedora are in the Red Hat family https://github.com/elastic/go-sysinfo/blob/6d844a021a259bdc8ef539d7689934febbcca538/providers/linux/os.go#L50-L58
Alpine Linux is supported as a distribution and is included in tests, however it returns an empty string for the OS Family. While Alpine doesn't have many derivatives at this time, it is used enough in use cases like containers that for consistency and ease Family should return
alpinejust like you getdebianfor the family if you run it ondebian