From 2aeeef5579cdd4f16b4ec9f30dbce54f581248ee Mon Sep 17 00:00:00 2001
From: Alvin Huang <17609145+alvin-huang@users.noreply.github.com>
Date: Wed, 17 Aug 2022 12:01:30 -0400
Subject: [PATCH] add context to version label validation

---
 scripts/docker_build | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/scripts/docker_build b/scripts/docker_build
index 874e7116..4fd36eed 100755
--- a/scripts/docker_build
+++ b/scripts/docker_build
@@ -77,10 +77,11 @@ docker buildx build --load \
 # validate version label is set to the correct value
 version_label_validation() {
 	val=$(docker inspect --format='{{ index .Config.Labels "version" }}' "${2}")
+	error_context="actions-docker-build passes a 'PRODUCT_VERSION' build-arg to the build. Ensure it is defined in the Dockerfile and the 'version' label uses it"
 	if [ "$val" = "" ]; then
-		die "Error: 'version' label must be set to version passed in but was empty"
+		die "Error: 'version' label must be set to version passed in but was empty.\n$error_context"
 	elif [ "$val" != "${1}" ]; then
-		die "Error: 'version' label must be set to version passed in but was ($val)"
+		die "Error: 'version' label must match the version passed in but was ($val).\n$error_context"
 	fi
 }