Nightly and unofficial builds of Docker bear the suffix `-dirty` in the
version string. Change this suffix to `-unsupported` to make it explicit
that no support will be provided on such versions, and that it is for
example unnecessary to file an issue for it.
Signed-off-by: Arnaud Porterie <arnaud.porterie@docker.com>
Upstream-commit: 3e298c5928d0a2cbf5e1b374783ce59de2076637
Component: engine
29a743c21a