/ # make --version
  GNU Make 4.2.1
  Built for x86_64-alpine-linux-musl
  Copyright (C) 1988-2016 Free Software Foundation, Inc.
  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
  This is free software: you are free to change and redistribute it.
  There is NO WARRANTY, to the extent permitted by law.