@@ -255,7 +255,11 @@ func (container *Container) Attach(stdin io.ReadCloser, stdinCloser io.Closer, s

 				if container.Config.StdinOnce && !container.Config.Tty {

 					defer cStdin.Close()

 				}

-				_, err := CopyEscapable(cStdin, stdin)

+				if container.Config.Tty {

+					_, err = CopyEscapable(cStdin, stdin)

+				} else {

+					_, err = io.Copy(cStdin, stdin)

+				}

 				if err != nil {

 					Debugf("[error] attach stdin: %s\n", err)

 				}