From 84d5bd2f1bcd2a446b40618231c8882e0ac60409 Mon Sep 17 00:00:00 2001
From: surtur <a_mirre@utb.cz>
Date: Tue, 9 Mar 2021 21:39:05 +0100
Subject: [PATCH] build: attempt to leverage latest enhancements

could potentially remedy failing builds on hosts with older docker daemon
refs:
  * https://docs.docker.com/develop/develop-images/build_enhancements/#overriding-default-frontends
  * https://pythonspeed.com/articles/docker-buildkit/
---
 Dockerfile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Dockerfile b/Dockerfile
index 6ffe065..1082dd3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,8 @@
+# syntax=docker/dockerfile:1.2
+# refs:
+#   https://docs.docker.com/develop/develop-images/build_enhancements/#overriding-default-frontends
+#   https://pythonspeed.com/articles/docker-buildkit/
+
 FROM archlinux:latest
 
 ARG BUILD_DATE