Merge pull request #5101 from vector-im/doug/5039_workflow_concurrency

Add concurrency to GitHub workflows to auto-cancel older runs.

.github/workflows/ci-build.yml

@@ -17,6 +17,12 @@ jobs:
   build:
     name: Build
     runs-on: macos-11
+    
+    concurrency:
+      # When running on develop, use the sha to allow all runs of this workflow to run concurrently.
+      # Otherwise only allow a single run of this workflow on each branch, automatically cancelling older runs.
+      group: ${{ github.ref == 'refs/heads/develop' && format('build-develop-{0}', github.sha) || format('build-{0}', github.ref) }}
+      cancel-in-progress: true
 
     steps:
       - uses: actions/checkout@v2

.github/workflows/ci-tests.yml

@@ -17,6 +17,12 @@ jobs:
   tests:
     name: Tests
     runs-on: macos-11
+    
+    concurrency:
+      # When running on develop, use the sha to allow all runs of this workflow to run concurrently.
+      # Otherwise only allow a single run of this workflow on each branch, automatically cancelling older runs.
+      group: ${{ github.ref == 'refs/heads/develop' && format('tests-develop-{0}', github.sha) || format('tests-{0}', github.ref) }}
+      cancel-in-progress: true
 
     steps:
       - uses: actions/checkout@v2

.github/workflows/release-alpha.yml

@@ -16,6 +16,12 @@ jobs:
   build:
     name: Release
     runs-on: macos-11
+    
+    concurrency:
+      # When running on develop, use the sha to allow all runs of this workflow to run concurrently.
+      # Otherwise only allow a single run of this workflow on each branch, automatically cancelling older runs.
+      group: ${{ github.ref == 'refs/heads/develop' && format('alpha-develop-{0}', github.sha) || format('alpha-{0}', github.ref) }}
+      cancel-in-progress: true
 
     steps:
       - uses: actions/checkout@v2

changelog.d/5039.build

@@ -0,0 +1 @@
+Add concurrency to the GitHub workflows to auto-cancel older runs of each action for PRs.