feat: package helm chart on push (#74)

* feat: package helm chart on push

* fix: semver compatible chart version

* fix: typo

.github/workflows/ci.yml

@@ -1,4 +1,4 @@
-name: Contiuous Integration
+name: Continuous Integration
 
 on:
   push:
@@ -61,4 +61,35 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Push snapshot container image
-        run: docker push ghcr.io/caas-team/sparrow:${{ steps.version.outputs.value }}
+        run: docker push ghcr.io/caas-team/sparrow:${{ steps.version.outputs.value }}
+  helm:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v4
+        with:
+          fetch-tags: true
+
+      - name: Fetch tags explicitly
+        run: git fetch --tags
+
+      - name: Get App Version
+        id: appVersion
+        run:  echo "value=commit-$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+
+      - name: Get Chart Version
+        id: chartVersion
+        # produces a tag like: 0.2.2-commit-asdf3
+        run: echo "value=$(git tag --sort=taggerdate | tail -1 | cut -c 2-)-commit-$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+
+      - name: Registry login
+        run: helm registry login ghcr.io -u ${{ github.actor }} -p ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Helm lint
+        run: helm lint ./chart
+
+      - name: Helm package
+        run: helm package ./chart -d ./chart --version ${{ steps.chartVersion.outputs.value }} --app-version ${{ steps.appVersion.outputs.value }}
+
+      - name: Push helm package
+        run: helm push $(ls ./chart/*.tgz| head -1) oci://ghcr.io/${{ github.repository_owner }}/charts