From a21a7fe1c879ab6006d70f173b368b8370c04487 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Ho=C3=9F?= <seb@xn--ho-hia.de>
Date: Mon, 29 Jan 2024 13:51:52 +0100
Subject: [PATCH] add license header

---
 contrib/Dockerfile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/contrib/Dockerfile b/contrib/Dockerfile
index e1b324f..7285010 100644
--- a/contrib/Dockerfile
+++ b/contrib/Dockerfile
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: The matrix-alertmanager-receiver Authors
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 FROM golang:1.21-alpine AS build
 WORKDIR /app
 COPY go.mod go.sum ./