diff --git a/config b/config
index 4062d77..84ccc3f 100755
--- a/config
+++ b/config
@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
-export REDIS_IMAGE=${REDIS_IMAGE:="$(awk -F '[ :]' '{print $2}' Dockerfile)"}
-export REDIS_IMAGE_VERSION=${REDIS_IMAGE_VERSION:="$(awk -F '[ :]' '{print $3}' Dockerfile)"}
+_DIR="$(dirname $0)"
+export REDIS_IMAGE=${REDIS_IMAGE:="$(awk -F '[ :]' '{print $2}' $_DIR/Dockerfile)"}
+export REDIS_IMAGE_VERSION=${REDIS_IMAGE_VERSION:="$(awk -F '[ :]' '{print $3}' $_DIR/Dockerfile)"}
 export REDIS_ROOT=${REDIS_ROOT:="$DOKKU_LIB_ROOT/services/redis"}
 export REDIS_HOST_ROOT=${REDIS_HOST_ROOT:=$REDIS_ROOT}