From 4701a8b65ffd175d4dd2524ea5f05b2fba1bd51a Mon Sep 17 00:00:00 2001
From: iwilltry42 <iwilltry42@gmail.com>
Date: Thu, 25 Jul 2019 13:11:34 +0200
Subject: [PATCH] make make error out if no K3S_TAG was found or set

---
 Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Makefile b/Makefile
index 391e2a45..f99f3107 100644
--- a/Makefile
+++ b/Makefile
@@ -12,6 +12,9 @@ endif
 
 # get latest k3s version
 K3S_TAG		:= $(shell curl --silent "https://api.github.com/repos/rancher/k3s/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
+ifeq ($(K3S_TAG),)
+$(error "K3S_TAG undefined: couldn't get latest k3s image tag!")
+endif
 
 # Go options
 GO        ?= go