From 07f9e4c7cabd24857a935a4ccc122e74091cbe5a Mon Sep 17 00:00:00 2001
From: Guohan Lu <lguohan@gmail.com>
Date: Tue, 29 Dec 2020 14:08:10 -0800
Subject: [PATCH] [build]: setup -t option in docker run correctly

use bash -t test flag to check if input device is tty or not

Signed-off-by: Guohan Lu <lguohan@gmail.com>
---
 Makefile.work | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile.work b/Makefile.work
index 8dcda0eb5676..8703a13d0914 100644
--- a/Makefile.work
+++ b/Makefile.work
@@ -137,7 +137,7 @@ DOCKER_RUN := docker run --rm=true --privileged --init \
     -w $(DOCKER_BUILDER_WORKDIR) \
     -e "http_proxy=$(http_proxy)" \
     -e "https_proxy=$(https_proxy)" \
-    -i$(if $(TERM),t,) \
+    -i$(shell { if [ -t 0 ]; then echo t; fi }) \
     $(SONIC_BUILDER_EXTRA_CMDLINE)
 
 ifneq ($(DOCKER_BUILDER_USER_MOUNT),)