Publish on release created

.github/workflows/build.yml

@@ -1,7 +1,6 @@
 on:
-  push:
-    tags:
-      - '*'
+  release:
+    types: [created]
 
 name: Deploy Extension
 jobs:
@@ -14,12 +13,23 @@ jobs:
           node-version: 12
       - run: npm ci
       - name: Publish to Visual Studio Marketplace
+        id: publishToVSMarketplace
         uses: HaaLeo/publish-vscode-extension@v0
         with:
           pat: ${{ secrets.VS_MARKETPLACE_TOKEN }}
           registryUrl: https://marketplace.visualstudio.com
       - name: Publish to Open VSX Registry
+        id: publishToOpenVSX
         continue-on-error: true
         uses: HaaLeo/publish-vscode-extension@v0
         with:
           pat: ${{ secrets.OPEN_VSX_TOKEN }}
+      - name: Upload extension vsix
+        uses: actions/upload-release-asset@v1.0.2
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ github.event.release.upload_url }}
+          asset_path: ${{ steps.publishToVSMarketplace.outputs.vsixPath }}
+          asset_name: haskell-${{ github.event.release.tag_name }}.vsix
+          asset_content_type: application/vsix