From b2d89f406bd13bfb72c3dbdb2fd9e1ab1e458ef4 Mon Sep 17 00:00:00 2001
From: Jimmy Zelinskie <jimmy.zelinskie@coreos.com>
Date: Tue, 3 Mar 2015 16:53:28 -0500
Subject: [PATCH] formats/aci: handle config['ENV'] is None

---
 formats/aci.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/formats/aci.py b/formats/aci.py
index dd9bf4ff9..b5c40effd 100644
--- a/formats/aci.py
+++ b/formats/aci.py
@@ -178,7 +178,7 @@ class ACIImage(TarImageFormatter):
         "eventHandlers": [],
         "workingDirectory": config.get('WorkingDir', '') or '/',
         "environment": [{"name": key, "value": value}
-                        for (key, value) in [e.split('=') for e in config.get('Env', [])]],
+                        for (key, value) in [e.split('=') for e in config.get('Env', []) or []]],
         "isolators": ACIImage._build_isolators(config),
         "mountPoints": ACIImage._build_volumes(config),
         "ports": ACIImage._build_ports(config),