From 29b8dfcc471d47f7313f791e0cf51583c6df94d7 Mon Sep 17 00:00:00 2001
From: Andreas Kohn <andreas.kohn@gmail.com>
Date: Tue, 7 Mar 2017 15:25:59 +0100
Subject: [PATCH] Export DEBIAN_FRONTEND to silence warnings from the snakeoil
 certificate generation

---
 controllers/nginx/rootfs/Dockerfile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/controllers/nginx/rootfs/Dockerfile b/controllers/nginx/rootfs/Dockerfile
index 6959d6bbc7..b5fceb7e71 100644
--- a/controllers/nginx/rootfs/Dockerfile
+++ b/controllers/nginx/rootfs/Dockerfile
@@ -14,7 +14,9 @@
 
 FROM gcr.io/google_containers/nginx-slim:0.14
 
-RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y \
+RUN export DEBIAN_FRONTEND=noninteractive \
+  && apt-get update \
+  && apt-get install -y \
   diffutils \
   ssl-cert \
   --no-install-recommends \