From 10107cf8cb6f8417fb8c74032d08000ec0587cdd Mon Sep 17 00:00:00 2001
From: Peter van Dijk <peter.van.dijk@powerdns.com>
Date: Mon, 27 May 2019 13:11:59 +0200
Subject: [PATCH] builder: error out when no valid modules are specified

---
 builder-support/dockerfiles/Dockerfile.target.sdist | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/builder-support/dockerfiles/Dockerfile.target.sdist b/builder-support/dockerfiles/Dockerfile.target.sdist
index 81760329a7..57c09725c3 100644
--- a/builder-support/dockerfiles/Dockerfile.target.sdist
+++ b/builder-support/dockerfiles/Dockerfile.target.sdist
@@ -13,6 +13,10 @@
 FROM alpine:3.6 as sdist
 ARG BUILDER_CACHE_BUSTER=
 
+@IF [ -z "$M_all$M_authoritative$M_recursor$M_dnsdist"]
+RUN echo "no valid modules specified!" ; exit 1
+@ENDIF
+
 @IF [ ! -z "$M_authoritative$M_all" ]
 COPY --from=pdns-authoritative /sdist/ /sdist/
 @ENDIF
-- 
2.47.2