fix container name matching?

docker/docker.go

@@ -131,7 +131,7 @@ func StartContainer(containerName string, containerType string) (structs.Contain
 	var existingContainer *types.Container = nil
 	for _, container := range containers {
 		for _, name := range container.Names {
-			if name == containerName {
+			if name == "/"+containerName {
 				existingContainer = &container
 				break
 			}