From 81147d9dfbec0a607c9db2cd21847ef0860f5e28 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Wirtel?= <stephane@wirtel.be>
Date: Tue, 3 Feb 2026 08:18:02 +0100
Subject: [PATCH] chore: update Dockerfile syntax version to 1.21.0

Update the Docker buildkit syntax version from 1.19.0 to 1.21.0 to benefit
from the latest build features and improvements in the BuildKit engine.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 898a02b..510278e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.19.0
+# syntax=docker/dockerfile:1.21.0
 FROM python:3.13 AS compile-stage
 RUN --mount=type=cache,target=/var/cache/apt \
     apt update && \