From 0d2e2cda8fc45044c084fe1e15be2809dc255503 Mon Sep 17 00:00:00 2001
From: Tom Wilkie <tom.wilkie@gmail.com>
Date: Mon, 25 Apr 2016 14:00:02 +0100
Subject: [PATCH] Detect if sudo is required by running 'docker info'

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index a91dec037..a61f35252 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 .PHONY: all deps static clean client-lint client-test client-sync backend frontend shell lint
 
 # If you can use Docker without being root, you can `make SUDO= <target>`
-SUDO=$(shell (echo "$$DOCKER_HOST" | grep "tcp://" >/dev/null) || echo "sudo -E")
+SUDO=$(shell docker info >/dev/null 2>&1 || echo "sudo -E")
 DOCKERHUB_USER=weaveworks
 SCOPE_EXE=prog/scope
 SCOPE_IMAGE=$(DOCKERHUB_USER)/scope