From 0e7a70dbfb00a109704e2f629539fc5064c55890 Mon Sep 17 00:00:00 2001
From: Evan Hazlett <ejhazlett@gmail.com>
Date: Tue, 2 Oct 2018 15:59:43 +0000
Subject: [PATCH] skip already exists content

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
---
 container.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/container.go b/container.go
index 26247592b..88898cc17 100644
--- a/container.go
+++ b/container.go
@@ -325,7 +325,10 @@ func (c *container) Checkpoint(ctx context.Context, ref string, opts ...Checkpoi
 	// process remaining opts
 	for _, o := range opts {
 		if err := o(ctx, c.client, &info, index, copts); err != nil {
-			return nil, err
+			err = errdefs.FromGRPC(err)
+			if !errdefs.IsAlreadyExists(err) {
+				return nil, err
+			}
 		}
 	}