cli: add --mount to docker run

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>

docs/reference/commandline/create.md

@@ -78,6 +78,7 @@ Options:
       --memory-reservation string   Memory soft limit
       --memory-swap string          Swap limit equal to memory plus swap: '-1' to enable unlimited swap
       --memory-swappiness int       Tune container memory swappiness (0 to 100) (default -1)
+      --mount value                 Attach a filesytem mount to the container (default [])
       --name string                 Assign a name to the container
       --network-alias value         Add network-scoped alias for the container (default [])
       --network string              Connect a container to a network (default "default")