add truncindex

fix #222

Signed-off-by: yanxuean <yan.xuean@zte.com.cn>

pkg/server/container_execsync.go

@@ -78,7 +78,7 @@ func (c *criContainerdService) execInContainer(ctx context.Context, id string, o
 	// Get container from our container store.
 	cntr, err := c.containerStore.Get(id)
 	if err != nil {
-		return nil, fmt.Errorf("failed to find container in store: %v", err)
+		return nil, fmt.Errorf("failed to find container %q in store: %v", id, err)
 	}
 	id = cntr.ID