Add Helm chart build and publishing to Gitea workflows

- Added Helm chart build job to main CI/CD workflow
- Created dedicated helm-release workflow for version tags
- Integrated Helm packaging with Gitea package registry
- Added automatic chart versioning and publishing
- Updated README with Helm deployment instructions
- Configured chart linting and validation steps
- Added release automation for tagged versions

.gitea/workflows/build.yml

@@ -79,3 +79,67 @@ jobs:
           labels: ${{ steps.meta-api.outputs.labels }}
           cache-from: type=registry,ref=${{ vars.PACKAGES_REGISTRY || gitea.server_url }}/${{ gitea.repository }}/api:buildcache
           cache-to: type=registry,ref=${{ vars.PACKAGES_REGISTRY || gitea.server_url }}/${{ gitea.repository }}/api:buildcache,mode=max
+
+  build-helm:
+    runs-on: ubuntu-latest
+    needs: [build-web, build-api]
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0  # Fetch all history for proper versioning
+
+      - name: Install Helm
+        uses: azure/setup-helm@v3
+        with:
+          version: 'latest'
+
+      - name: Update Chart dependencies
+        run: |
+          cd helm/api7ee
+          helm dependency update
+
+      - name: Lint Helm chart
+        run: |
+          helm lint helm/api7ee/
+
+      - name: Package Helm chart
+        run: |
+          # Get version from Chart.yaml
+          CHART_VERSION=$(grep '^version:' helm/api7ee/Chart.yaml | awk '{print $2}')
+
+          # Update image registry in values.yaml to match Gitea registry
+          sed -i "s|registry: gitea.server_url|registry: ${{ gitea.server_url }}|g" helm/api7ee/values.yaml
+
+          # Package the chart
+          helm package helm/api7ee/ --version ${CHART_VERSION}
+
+          # Store chart filename for later use
+          echo "CHART_FILE=api7ee-${CHART_VERSION}.tgz" >> $GITHUB_ENV
+
+      - name: Push Helm chart to Gitea Package Registry
+        run: |
+          # Upload Helm chart to Gitea package registry
+          # Format: https://{gitea-server}/api/packages/{owner}/helm/api/charts
+          curl --fail-with-body \
+            -H "Authorization: token ${{ secrets.PACKAGES_PUSH_TOKEN }}" \
+            -X POST \
+            -F "chart=@${CHART_FILE}" \
+            https://${{ gitea.server_url }}/api/packages/${{ gitea.repository_owner }}/helm/api/charts
+
+          echo "✅ Helm chart pushed successfully to Gitea Package Registry"
+          echo "📦 Chart: ${CHART_FILE}"
+          echo "🔗 Registry URL: https://${{ gitea.server_url }}/api/packages/${{ gitea.repository_owner }}/helm"
+
+      - name: Create Helm index
+        if: success()
+        run: |
+          # Create or update the Helm repository index
+          echo "📝 Helm chart repository information:"
+          echo "To add this repository:"
+          echo "  helm repo add api7ee https://${{ gitea.server_url }}/api/packages/${{ gitea.repository_owner }}/helm"
+          echo "  helm repo update"
+          echo ""
+          echo "To install the chart:"
+          echo "  helm install my-api7ee api7ee/api7ee"