Updated swagger config

Signed-off-by: Olli Janatuinen <olli.janatuinen@gmail.com>

api/swagger.yaml

@@ -238,11 +238,13 @@ definitions:
           - `bind` Mounts a file or directory from the host into the container. Must exist prior to creating the container.
           - `volume` Creates a volume with the given name and options (or uses a pre-existing volume with the same name and options). These are **not** removed when the container is removed.
           - `tmpfs` Create a tmpfs with the given options. The mount source cannot be specified for tmpfs.
+          - `npipe` Mounts a named pipe from the host into the container. Must exist prior to creating the container.
         type: "string"
         enum:
           - "bind"
           - "volume"
           - "tmpfs"
+          - "npipe"
       ReadOnly:
         description: "Whether the mount should be read-only."
         type: "boolean"