added GH action for publishing Ditto Helm chart to Docker Hub

Signed-off-by: Thomas Jäckle <thomas.jaeckle@beyonnex.io>

.github/workflows/helm-chart-release.yml

@@ -0,0 +1,34 @@
+# Copyright (c) 2023 Contributors to the Eclipse Foundation
+#
+# See the NOTICE file(s) distributed with this work for additional
+# information regarding copyright ownership.
+#
+# This program and the accompanying materials are made available under the
+# terms of the Eclipse Public License 2.0 which is available at
+# http://www.eclipse.org/legal/epl-2.0
+#
+# SPDX-License-Identifier: EPL-2.0
+name: Release and publish Helm chart
+
+on:
+  workflow_dispatch:
+    inputs:
+      chartVersion:
+        description: 'Helm chart version'
+        required: true
+        type: string
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Package and push Ditto Helm chart to Docker Hub
+        uses: appany/helm-oci-chart-releaser@v0.3.0
+        with:
+          repository: eclipse
+          name: ditto
+          tag: ${{ inputs.chartVersion }}
+          path: deployment/helm/ditto
+          registry: registry-1.docker.io
+          registry_username: eclipsedittobot
+          registry_password: ${{ secrets.DOCKER_HUB_TOKEN }}

deployment/helm/ditto/Chart.yaml

@@ -16,7 +16,7 @@ description: |
   A digital twin is a virtual, cloud based, representation of his real world counterpart
   (real world “Things”, e.g. devices like sensors, smart heating, connected cars, smart grids, EV charging stations etc).
 type: application
-version: 3.3.0
+version: 0.0.1  # chart version is set by release-job
 appVersion: 3.2.1
 keywords:
   - iot-chart