From b51303cddce2cbb22fc3ee0de9d9125bec2f029a Mon Sep 17 00:00:00 2001
From: "Guillaume J. Charmes" <guillaume@dotcloud.com>
Date: Mon, 20 May 2013 13:50:50 -0700
Subject: [PATCH] Make sure to have a command to execute upon commit

---
 builder_client.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/builder_client.go b/builder_client.go
index 0ad35045dd..0c7ea15e13 100644
--- a/builder_client.go
+++ b/builder_client.go
@@ -134,6 +134,10 @@ func (b *BuilderClient) CmdInsert(args string) error {
 }
 
 func (b *BuilderClient) commit() error {
+	if b.config.Cmd == nil || len(b.config.Cmd) < 1 {
+		b.config.Cmd = []string{"echo"}
+	}
+
 	body, _, err := b.cli.call("POST", "/containers/create", b.config)
 	if err != nil {
 		return err