Check and dump rootfs.

Signed-off-by: Lantao Liu <lantaol@google.com>

pkg/server/image_pull.go

@@ -153,6 +153,11 @@ func (c *criContainerdService) PullImage(ctx context.Context, r *runtime.PullIma
 		return nil, fmt.Errorf("failed to add image %q into store: %v", img.ID, err)
 	}
 
+	glog.V(0).Infof("Check image after pull image %q", imageID)
+	if err := c.checkImage(ctx, imageID, "", nil, false); err != nil {
+		glog.Errorf("Failed to check image %q: %v", imageID, err)
+	}
+
 	// NOTE(random-liu): the actual state in containerd is the source of truth, even we maintain
 	// in-memory image store, it's only for in-memory indexing. The image could be removed
 	// by someone else anytime, before/during/after we create the metadata. We should always