feat: add GitHub Actions workflow for OCI chart releases

Author: RuTHlessBEat200

.github/workflows/release-chart.yml

@@ -0,0 +1,86 @@
+name: Release Helm Chart
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'  # Trigger on version tags like v1.0.0, v1.2.3, etc.
+
+env:
+  REGISTRY: ghcr.io
+  CHART_NAME: patchmon
+
+jobs:
+  release:
+    runs-on: self-hosted
+    permissions:
+      contents: write
+      packages: write
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Extract version from tag
+        id: version
+        run: |
+          # Remove 'v' prefix from tag (v1.2.3 -> 1.2.3)
+          VERSION=${GITHUB_REF_NAME#v}
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+          echo "Tag version: $VERSION"
+
+      - name: Verify Chart.yaml version matches tag
+        run: |
+          CHART_VERSION=$(grep '^version:' Chart.yaml | awk '{print $2}' | tr -d '"')
+          TAG_VERSION="${{ steps.version.outputs.version }}"
+          
+          echo "Chart.yaml version: $CHART_VERSION"
+          echo "Git tag version: $TAG_VERSION"
+          
+          if [ "$CHART_VERSION" != "$TAG_VERSION" ]; then
+            echo "ERROR: Chart version ($CHART_VERSION) does not match git tag ($TAG_VERSION)"
+            exit 1
+          fi
+          
+          echo "Version verification passed"
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v4
+        with:
+          version: '3.14.0'
+
+      - name: Log in to GitHub Container Registry
+        run: |
+          echo "${{ secrets.GITHUB_TOKEN }}" | helm registry login ${{ env.REGISTRY }} \
+            --username ${{ github.actor }} \
+            --password-stdin
+
+      - name: Package Helm chart
+        run: |
+          helm package . --destination .helm-package
+          echo "Chart packaged successfully"
+
+      - name: Push chart to OCI registry
+        run: |
+          CHART_PACKAGE=$(ls .helm-package/${{ env.CHART_NAME }}-*.tgz)
+          REPO_OWNER_LOWER=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
+          helm push "$CHART_PACKAGE" oci://${{ env.REGISTRY }}/${REPO_OWNER_LOWER}/charts
+          echo "Chart pushed to OCI registry"
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: .helm-package/${{ env.CHART_NAME }}-*.tgz
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Output installation instructions
+        run: |
+          REPO_OWNER_LOWER=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
+          echo "🎉 Chart released successfully!"
+          echo ""
+          echo "Install with:"
+          echo "  helm install patchmon oci://${{ env.REGISTRY }}/${REPO_OWNER_LOWER}/charts/${{ env.CHART_NAME }} --version ${{ steps.version.outputs.version }}"
+          echo ""
+          echo "Or upgrade with:"
+          echo "  helm upgrade patchmon oci://${{ env.REGISTRY }}/${REPO_OWNER_LOWER}/charts/${{ env.CHART_NAME }} --version ${{ steps.version.outputs.version }}"