From 8ee79df34259d9aec28f7056778c5b29a727b345 Mon Sep 17 00:00:00 2001
From: Olaf Alders <olaf@wundersolutions.com>
Date: Fri, 18 Sep 2026 20:06:03 +0000
Subject: [PATCH] build-container: add concurrency group to prevent stale
 deploys

Cancel superseded in-progress builds so the newest master commit
wins the deploy race. Scoped per ref, so PR/staging/prod builds
stay independent. Fixes #3733.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
---
 .github/workflows/build-container.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/build-container.yml b/.github/workflows/build-container.yml
index 9352fa442b..cef99ed740 100644
--- a/.github/workflows/build-container.yml
+++ b/.github/workflows/build-container.yml
@@ -1,4 +1,7 @@
 name: Build container
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 on:
   push:
     branches: