Update github workflow

.github/workflows/docker-build-publish.yml

@@ -9,30 +9,28 @@ on:
     branches:
       - '**'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   check-for-migrations:
     name: Check for DB Migrations
     if: github.event_name == 'pull_request' && (github.base_ref == 'master' || github.base_ref == 'develop')
     runs-on: ubuntu-latest
     outputs:
-      has_migrations: ${{ steps.check_migrations.outputs.has_migrations }}
+      has_migrations: ${{ steps.filter.outputs.migrations }}
     steps:
-      - name: Checkout Repository for Diff
+      - name: Checkout Repository
         uses: actions/checkout@v6
-        with:
-          fetch-depth: 0
 
-      - name: Detect Flyway Migration Changes
-        id: check_migrations
-        run: |
-          # Compare PR head with the target base branch
-          if git diff --name-only origin/${{ github.base_ref }}...HEAD | grep -q "booklore-api/src/main/resources/db/migration/V.*.sql"; then
-            echo "Migration file changes detected. Proceeding with migration preview."
-            echo "has_migrations=true" >> $GITHUB_OUTPUT
-          else
-            echo "No migration file changes detected. Skipping migration preview."
-            echo "has_migrations=false" >> $GITHUB_OUTPUT
-          fi
+      - name: Detect Migration Changes
+        uses: dorny/paths-filter@v3
+        id: filter
+        with:
+          filters: |
+            migrations:
+              - 'booklore-api/src/main/resources/db/migration/V*.sql'
 
   flyway-migration-preview:
     name: Flyway DB Migration Preview
@@ -90,7 +88,7 @@ jobs:
   test-pr:
     name: Run Tests on Pull Request
     needs: [check-for-migrations, flyway-migration-preview]
-    if: always() && github.event_name == 'pull_request' && (needs.flyway-migration-preview.result == 'success' || needs.flyway-migration-preview.result == 'skipped')
+    if: github.event_name == 'pull_request' && (needs.flyway-migration-preview.result == 'success' || needs.flyway-migration-preview.result == 'skipped')
     runs-on: ubuntu-latest
 
     permissions:
@@ -102,7 +100,18 @@ jobs:
       - name: Checkout Repository
         uses: actions/checkout@v6
 
+      - name: Detect Changed Paths
+        uses: dorny/paths-filter@v3
+        id: filter
+        with:
+          filters: |
+            backend_or_docker:
+              - 'booklore-api/**'
+              - 'Dockerfile'
+              - 'start.sh'
+
       - name: Set Up JDK 21
+        if: steps.filter.outputs.backend_or_docker == 'true'
         uses: actions/setup-java@v5
         with:
           java-version: '21'
@@ -110,6 +119,7 @@ jobs:
           cache: 'gradle'
 
       - name: Execute Backend Tests
+        if: steps.filter.outputs.backend_or_docker == 'true'
         id: backend_tests
         working-directory: ./booklore-api
         run: |
@@ -118,8 +128,8 @@ jobs:
         continue-on-error: true
 
       - name: Publish Backend Test Results
+        if: always() && steps.backend_tests.conclusion != 'skipped'
         uses: EnricoMi/publish-unit-test-result-action@v2
-        if: always()
         with:
           files: booklore-api/build/test-results/**/*.xml
           check_name: Backend Test Results
@@ -128,8 +138,8 @@ jobs:
           report_suite_logs: 'any'
 
       - name: Upload Backend Test Reports
+        if: always() && steps.backend_tests.conclusion != 'skipped'
         uses: actions/upload-artifact@v6
-        if: always()
         with:
           name: test-reports-pr-${{ github.event.pull_request.number }}
           path: |
@@ -143,6 +153,11 @@ jobs:
           echo "❌ Backend tests failed! Check the test results above."
           exit 1
 
+      - name: Skip Backend Tests
+        if: steps.filter.outputs.backend_or_docker == 'false'
+        run: |
+          echo "✅ No backend changes detected. Skipping backend tests."
+
       - name: PR Validation Complete
         run: |
           echo "✅ All PR validation checks passed!"
@@ -163,7 +178,23 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Detect Changed Paths
+        uses: dorny/paths-filter@v3
+        id: filter
+        with:
+          filters: |
+            backend_or_docker:
+              - 'booklore-api/**'
+              - 'Dockerfile'
+              - 'start.sh'
+
+      - name: Skip Build and Push
+        if: steps.filter.outputs.backend_or_docker == 'false'
+        run: |
+          echo "✅ No backend/Docker changes detected. Skipping image build and publish."
+
       - name: Set Up JDK 21
+        if: steps.filter.outputs.backend_or_docker == 'true'
         uses: actions/setup-java@v5
         with:
           java-version: '21'
@@ -171,18 +202,21 @@ jobs:
           cache: 'gradle'
 
       - name: Execute Backend Tests
+        if: steps.filter.outputs.backend_or_docker == 'true'
         working-directory: ./booklore-api
         run: |
           echo "Running backend tests before building image..."
           ./gradlew test --no-daemon --parallel --build-cache
 
-      - name: Authenticate to Docker Hub
+      - name: Authenticate to Docker Registries
+        if: steps.filter.outputs.backend_or_docker == 'true'
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
 
       - name: Authenticate to GitHub Container Registry
+        if: steps.filter.outputs.backend_or_docker == 'true'
         uses: docker/login-action@v3
         with:
           registry: ghcr.io
@@ -190,12 +224,15 @@ jobs:
           password: ${{ github.token }}
 
       - name: Set Up QEMU for Multi-Architecture Builds
+        if: steps.filter.outputs.backend_or_docker == 'true'
         uses: docker/setup-qemu-action@v3
 
       - name: Set Up Docker Buildx
+        if: steps.filter.outputs.backend_or_docker == 'true'
         uses: docker/setup-buildx-action@v3
 
       - name: Retrieve Latest Master Version Tag
+        if: steps.filter.outputs.backend_or_docker == 'true'
         id: get_version
         run: |
           latest_tag=$(git tag --list "v*" --sort=-v:refname | head -n 1)
@@ -204,7 +241,7 @@ jobs:
           echo "Latest master tag: $latest_tag"
 
       - name: Determine Version Bump (Master Only)
-        if: github.ref == 'refs/heads/master'
+        if: steps.filter.outputs.backend_or_docker == 'true' && github.ref == 'refs/heads/master'
         id: determine_bump
         env:
           GH_TOKEN: ${{ github.token }}
@@ -260,6 +297,7 @@ jobs:
           echo "new_tag=$next_version" >> $GITHUB_ENV
 
       - name: Generate Image Tag
+        if: steps.filter.outputs.backend_or_docker == 'true'
         id: set_image_tag
         run: |
           branch="${GITHUB_REF#refs/heads/}"
@@ -275,7 +313,8 @@ jobs:
           echo "image_tag=$image_tag" >> $GITHUB_ENV
           echo "Image tag: $image_tag"
 
-      - name: Build and push Docker image
+      - name: Build and Push Docker Images
+        if: steps.filter.outputs.backend_or_docker == 'true'
         uses: docker/build-push-action@v6
         with:
           context: .
@@ -295,7 +334,7 @@ jobs:
             type=registry,ref=ghcr.io/booklore-app/booklore:buildcache,mode=max
 
       - name: Push Latest Tag (Master Only)
-        if: github.ref == 'refs/heads/master'
+        if: steps.filter.outputs.backend_or_docker == 'true' && github.ref == 'refs/heads/master'
         uses: docker/build-push-action@v6
         with:
           context: .
@@ -312,7 +351,7 @@ jobs:
           cache-from: type=gha
 
       - name: Update GitHub Release Draft (Master Only)
-        if: github.ref == 'refs/heads/master'
+        if: steps.filter.outputs.backend_or_docker == 'true' && github.ref == 'refs/heads/master'
         uses: release-drafter/release-drafter@v6
         with:
           tag: ${{ env.new_tag }}
@@ -321,7 +360,7 @@ jobs:
           GITHUB_TOKEN: ${{ github.token }}
 
       - name: Publish GitHub Draft Release (Master Only)
-        if: github.ref == 'refs/heads/master'
+        if: steps.filter.outputs.backend_or_docker == 'true' && github.ref == 'refs/heads/master'
         env:
           GITHUB_TOKEN: ${{ github.token }}
         run: |