From 41493b0fade0fd0c1651596d6e577e79b3a15a61 Mon Sep 17 00:00:00 2001
From: lixiaobing10051267 <li.xiaobing1@zte.com.cn>
Date: Tue, 27 Jun 2017 14:47:15 +0800
Subject: [PATCH] optimize for loop with rootfs.DiffIDs

Signed-off-by: lixiaobing10051267 <li.xiaobing1@zte.com.cn>
Upstream-commit: 80b2c326de29552c6ee4072fca75ae00eb3be41a
Component: engine
---
 components/engine/distribution/push_v2.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/engine/distribution/push_v2.go b/components/engine/distribution/push_v2.go
index 504083367e..ffc7d68107 100644
--- a/components/engine/distribution/push_v2.go
+++ b/components/engine/distribution/push_v2.go
@@ -147,7 +147,7 @@ func (p *v2Pusher) pushV2Tag(ctx context.Context, ref reference.NamedTagged, id
 	}
 
 	// Loop bounds condition is to avoid pushing the base layer on Windows.
-	for i := 0; i < len(rootfs.DiffIDs); i++ {
+	for range rootfs.DiffIDs {
 		descriptor := descriptorTemplate
 		descriptor.layer = l
 		descriptor.checkedDigests = make(map[digest.Digest]struct{})