From 3b7471ae848fd6405b0272448a854df94699c0cf Mon Sep 17 00:00:00 2001
From: Ryan Taylor Long <ryan@rtlong.com>
Date: Thu, 28 Jan 2016 06:19:03 +0000
Subject: [PATCH] Add depends_on to ALLOWED_KEYS

This ensures and already existing `depends_on` is not deleted when the service on which it is defined also employs `extends`.

Signed-off-by: Ryan Taylor Long <ryan@rtlong.com>
---
 compose/config/config.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/compose/config/config.py b/compose/config/config.py
index be680503b..7a8e55331 100644
--- a/compose/config/config.py
+++ b/compose/config/config.py
@@ -84,6 +84,7 @@ DOCKER_CONFIG_KEYS = [
 ALLOWED_KEYS = DOCKER_CONFIG_KEYS + [
     'build',
     'container_name',
+    'depends_on',
     'dockerfile',
     'expose',
     'external_links',