Trigger "Update Helm index" workflow for releases (#73)

Trigger the workflow in antrea-io/website to update the Helm index for
the Theia archive.

Signed-off-by: Antonin Bas <[email protected]>

.github/workflows/upload_release_assets.yml → .github/workflows/process_release.yml

@@ -1,13 +1,13 @@
-name: Upload assets to release
+name: Process new release
 
 on:
   release:
     types:
       - created
 
 jobs:
-  build:
-    runs-on: [ubuntu-latest]
+  upload-release-assets:
+    runs-on: ubuntu-latest
     steps:
     - name: Set up Go 1.17
       uses: actions/setup-go@v2
@@ -83,3 +83,23 @@ jobs:
         asset_path: ./assets/theia-chart.tgz
         asset_name: theia-chart.tgz
         asset_content_type: application/octet-stream
+
+  update-website:
+    name: Trigger website update for release
+    needs: upload-release-assets
+    runs-on: ubuntu-latest
+    steps:
+    - id: get-version
+      env:
+        TAG: ${{ github.ref }}
+      run: |
+        version=${TAG:10}
+        echo "::set-output name=version::$version"
+    - name: Update Helm index with Theia archive
+      uses: benc-uk/workflow-dispatch@v1
+      with:
+        repo: antrea-io/website
+        ref: refs/heads/main
+        workflow: Update Helm index
+        token: ${{ secrets.ANTREA_WEBSITE_WORKFLOW_DISPATCH_PAT }}
+        inputs: ${{ format('{{ "archive-url":"https://github.com/antrea-io/theia/releases/download/{0}/theia-chart.tgz" }}', steps.get-version.outputs.version) }}