Add support for the `bind-create-src` option in bind mounts, which
instructs the daemon to create the source mountpoint on the host if it
doesn't exist.
This allows to replace the legacy `-v /src/dir:/dst` with the `--mount`.
Usage:
--mount type=bind,src=/host/path,dst=/container/path,bind-create-src
--mount type=bind,src=/host/path,dst=/container/path,bind-create-src=true
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Paweł Gronowski
c747cff9ab