From 267c6f9477d46f9cddd820ee44a8ce78b40c5c2e Mon Sep 17 00:00:00 2001
From: Robert Kaussow <mail@geeklabor.de>
Date: Fri, 3 Jul 2020 10:30:31 +0200
Subject: [PATCH] fix default build version

---
 Dockerfile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 52a9328..aebba32 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,8 +6,8 @@ LABEL maintainer="Robert Kaussow <mail@geeklabor.de>" \
     org.label-schema.vendor="Robert Kaussow" \
     org.label-schema.schema-version="1.0"
 
-ARG BUILD_VERSION=20.6.30
-ENV VALIDATOR_VERSION="${BUILD_VERSION}"
+ARG BUILD_VERSION
+ENV VALIDATOR_VERSION="${BUILD_VERSION:-20.6.30}"
 
 RUN apk add --update --no-cache --virtual .build-deps libarchive-tools curl && \
     apk --update add openjdk8 && \