Fix attach stream closing issues

Fixes: #9860
Fixes: detach and attach tty mode

We never actually need to close container `stdin` after `stdout/stderr` finishes. We only need to close the `stdin` goroutine. In some cases this also means closing `stdin` but that is already controlled by the goroutine itself.

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

daemon/attach.go

@@ -179,9 +179,8 @@ func (daemon *Daemon) attach(streamConfig *StreamConfig, openStdin, stdinOnce, t
 		}
 		defer func() {
 			// Make sure stdin gets closed
-			if stdinOnce && cStdin != nil {
+			if stdin != nil {
 				stdin.Close()
-				cStdin.Close()
 			}
 			streamPipe.Close()
 			wg.Done()