The `make -C docker/*/. something` is expanded to
`make -C docker/firstsubdir/. docker/secondsubdir/. something`,
which leads to `make` interpreting the second directory as a
target name instead of running in that directory.
Switch to an explicit sh for loop to avoid this.
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
Change-Id: I7ae64f37b27079994c150b7d98af683d89b5c173