From 189bb3992228240468195abaa1040f2528707f89 Mon Sep 17 00:00:00 2001
From: will <will@256k1.dev>
Date: Tue, 5 Aug 2025 14:41:09 +0100
Subject: [PATCH] ci: fix annoying docker warning

Github-Pull: #32989
Rebased-From: 2aa288efdda

Docker currently warns that we are missing a default value.

Set this to scratch which will error if an appropriate image tag is not
passed in to silence the warning.
---
 ci/test_imagefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ci/test_imagefile b/ci/test_imagefile
index 224141b138f..f9cf3187a25 100644
--- a/ci/test_imagefile
+++ b/ci/test_imagefile
@@ -4,7 +4,8 @@
 
 # See ci/README.md for usage.
 
-ARG CI_IMAGE_NAME_TAG
+# We never want scratch, but default arg silences a Warning
+ARG CI_IMAGE_NAME_TAG=scratch
 FROM ${CI_IMAGE_NAME_TAG}
 
 ARG FILE_ENV