Only one instance of each workflow at a time (#998)

.github/workflows/code-coverage.yml

@@ -18,6 +18,10 @@ on:
     branches: [ master ]
   merge_group:
 
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
 jobs:
   build:
     env:

.github/workflows/docker-build.yml

@@ -7,6 +7,10 @@ on:
     branches: [ master ]
   merge_group:
 
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
 jobs:
   build:
     # The CMake configure and build commands are platform agnostic and should work equally

.github/workflows/native-build.yml

@@ -7,6 +7,10 @@ on:
     branches: [ master ]
   merge_group:
 
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
 jobs:
   build:
     # The CMake configure and build commands are platform-agnostic and should work equally

.github/workflows/upload-sonarcloud.yml

@@ -22,12 +22,13 @@ on:
     types:
       - completed
 
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.workflow_run.pull_requests[0].url || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
 jobs:
   upload:
     runs-on: ubuntu-22.04
-    # Only run on successful pull requests. Merge commits to master upload
-    # their coverage reports directly inside `code-coverage.yml`
-    # TODO<joka921> Also make this work for pushes to the master branch!
     if: github.event.workflow_run.conclusion == 'success'
     env:
       compiler: clang