Add separate console socket

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

libcontainer/setns_init_linux.go

@@ -16,8 +16,9 @@ import (
 // linuxSetnsInit performs the container's initialization for running a new process
 // inside an existing container.
 type linuxSetnsInit struct {
-	pipe   *os.File
-	config *initConfig
+	pipe          *os.File
+	consoleSocket *os.File
+	config        *initConfig
 }
 
 func (l *linuxSetnsInit) getSessionRingName() string {
@@ -32,7 +33,7 @@ func (l *linuxSetnsInit) Init() error {
 		}
 	}
 	if l.config.CreateConsole {
-		if err := setupConsole(l.pipe, l.config, false); err != nil {
+		if err := setupConsole(l.consoleSocket, l.config, false); err != nil {
 			return err
 		}
 		if err := system.Setctty(); err != nil {