From ca099341d042178519a17734d50e297add646d52 Mon Sep 17 00:00:00 2001
From: Momo Kornher <kornherm@amazon.co.uk>
Date: Fri, 27 Jun 2025 17:31:56 +0100
Subject: [PATCH 1/2] ci: cancel superseded PR builds

Pushing a new commit should cancel any in progress PR builds.
---
 .github/workflows/pr-build.yml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/.github/workflows/pr-build.yml b/.github/workflows/pr-build.yml
index e88e53836f492..43a4cd3cc0d28 100644
--- a/.github/workflows/pr-build.yml
+++ b/.github/workflows/pr-build.yml
@@ -12,6 +12,12 @@ on:
       - main
       - v2-release
 
+# For every PR, cancel any previous builds in progress
+# ... but for all other builds we keep them running
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event.pull_request.number || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   build:
     runs-on: aws-cdk_ubuntu-latest_32-core

From 7a0e128abd280ae81806f05f74f84167e640800e Mon Sep 17 00:00:00 2001
From: Momo Kornher <kornherm@amazon.co.uk>
Date: Fri, 27 Jun 2025 17:33:49 +0100
Subject: [PATCH 2/2] remove comment to test cancel

---
 .github/workflows/pr-build.yml | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/.github/workflows/pr-build.yml b/.github/workflows/pr-build.yml
index 43a4cd3cc0d28..ab422e558babd 100644
--- a/.github/workflows/pr-build.yml
+++ b/.github/workflows/pr-build.yml
@@ -38,10 +38,6 @@ jobs:
       - name: Set up Docker
         uses: docker/setup-buildx-action@v3
 
-      # @TODO
-      # - name: Start ECR proxy
-      #   run: /root/ecr-proxy/start.sh
-
       - name: Cache build artifacts
         uses: actions/cache@v4
         with: