@@ -228,7 +228,12 @@ func (e *ClientExecutor) Build(r io.Reader, args map[string]string) error {

 			)

 		}

-		if err := e.Client.StartContainer(e.Container.ID, &hostConfig); err != nil {

+		hc := &hostConfig

+		if len(hostConfig.Binds) == 0 {

+			// don't set HostConfig if we have no need for binds

+			hc = nil

+		}

+		if err := e.Client.StartContainer(e.Container.ID, hc); err != nil {

 			return fmt.Errorf("unable to start build container: %v", err)

 		}

 		// TODO: is this racy? may have to loop wait in the actual run step