From c8b2dd2fb1346e8efcdcdb6434d6ec860c9581f9 Mon Sep 17 00:00:00 2001
From: Joffrey F <joffrey@docker.com>
Date: Fri, 25 Aug 2017 18:09:06 -0700
Subject: [PATCH] Add support for extension fields in v2.x and v3.4

Signed-off-by: Joffrey F <joffrey@docker.com>
---
 compose/config/config_schema_v3.5.json | 1 +
 1 file changed, 1 insertion(+)

diff --git a/compose/config/config_schema_v3.5.json b/compose/config/config_schema_v3.5.json
index fa95d6a24..5400cd99f 100644
--- a/compose/config/config_schema_v3.5.json
+++ b/compose/config/config_schema_v3.5.json
@@ -64,6 +64,7 @@
     }
   },
 
+  "patternProperties": {"^x-": {}},
   "additionalProperties": false,
 
   "definitions": {