Add helm chart CI

.github/workflows/helm.yml

@@ -0,0 +1,63 @@
+name: Helm Charts
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  lint:
+    # Deduplicate jobs from pull requests and branch pushes within the same repo.
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.repository
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout source
+        uses: actions/[email protected]
+        with:
+          fetch-depth: 0
+
+      - name: Setup Helm
+        uses: azure/[email protected]
+
+      - name: Setup chart-testing
+        uses: helm/[email protected]
+
+      - name: Lint
+        run: >
+          ct
+          lint
+          --target-branch=${{ github.event.repository.default_branch }}
+          --validate-maintainers=false
+
+  build_publish:
+    needs:
+      - lint
+    # Deduplicate jobs from pull requests and branch pushes within the same repo.
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.repository
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout source
+        uses: actions/[email protected]
+
+      - name: Retrieve chart dependencies
+        run: helm dependency update
+
+      - name: Package chart
+        run: helm package charts/sessions
+
+      - name: Generate Image Name
+        run: echo IMAGE_REPOSITORY=oci://ghcr.io/$(echo "${{ github.repository }}-chart" | tr '[:upper:]' '[:lower:]' | tr '[_]' '[\-]') >> $GITHUB_ENV
+
+      - name: Log in to GitHub Docker Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/[email protected]
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Publish chart
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+        run: helm push $(ls sessions-*.tgz) ${{ env.IMAGE_REPOSITORY }}