From da280f8ee7aedede89a771461e8b80408e394d99 Mon Sep 17 00:00:00 2001
From: "renovate[bot]" <29139614+renovate[bot]@users.noreply.github.com>
Date: Thu, 22 Jan 2026 09:42:00 +0000
Subject: [PATCH] Update docker/dockerfile Docker tag to v1.21.0

---
 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 1cba586..9abfc03 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.20.0
+# syntax=docker/dockerfile:1.21.0
 FROM koalaman/shellcheck-alpine:v0.11.0 AS shellcheck
 WORKDIR /src
 RUN --mount=type=bind,target=. \