From 16c47faf35e393925f3e3320b16a255dfe3f25d5 Mon Sep 17 00:00:00 2001
From: Daniel Huber <daniel@dani09.de>
Date: Mon, 31 Dec 2018 12:39:35 +0100
Subject: [PATCH] Fix default docker prefix value of traefik certdumper

docker-compose logs a warning if a environment variable is not set and has no default value.
This adds a default string as the default for traefik certdumper which was added in 7c7b52d9.
---
 tests/build.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/build.yml b/tests/build.yml
index 3436d25a..e06327cd 100644
--- a/tests/build.yml
+++ b/tests/build.yml
@@ -31,7 +31,7 @@ services:
     build: ../optional/radicale
 
   traefik-certdumper:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}traefik-certdumper:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}traefik-certdumper:${MAILU_VERSION:-local}
     build: ../optional/traefik-certdumper
 
   admin: