Improve CI triggers

.github/workflows/docker-publish.yml

@@ -1,11 +1,17 @@
+# This workflow will build and publish Docker images of smahub for each push of a tag starting with "v"
+
+---
+# .github/workflows/docker-publish.yml
 name: Build and publish Docker image
 
 on:
   push:
-    branches: [ "main" ]
-    tags: [ 'v*.*.*' ]
-  pull_request:
-    branches: [ "main" ]
+    tags:
+      - v*
+
+concurrency:
+  group: "publish-${{ github.head_ref || github.ref }}"
+  cancel-in-progress: true
 
 env:
   REGISTRY: ghcr.io

.github/workflows/python-app.yml → .github/workflows/python-lint.yml

@@ -1,6 +1,8 @@
 # This workflow will install Python dependencies, run tests and lint with a single version of Python
 # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
 
+---
+# .github/workflows/python-lint.yml
 name: Run Python linter and tests
 
 on:
@@ -9,14 +11,16 @@ on:
   pull_request:
     branches: [ "main" ]
 
+concurrency:
+  group: "lint-${{ github.head_ref || github.ref }}"
+  cancel-in-progress: true
+
 permissions:
   contents: read
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python 3.10