Add or update the Azure App Service build and deployment workflow config

.github/workflows/main_headlessblazor.yml

@@ -0,0 +1,66 @@
+# Docs for the Azure Web Apps Deploy action: https://github.com/Azure/webapps-deploy
+# More GitHub Actions for Azure: https://github.com/Azure/actions
+
+name: Build and deploy ASP.Net Core app to Azure Web App - headlessblazor
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: windows-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up .NET Core
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: '8.x'
+          include-prerelease: true
+
+      - name: Build with dotnet
+        run: dotnet build --configuration Release
+
+      - name: dotnet publish
+        run: dotnet publish -c Release -o ${{env.DOTNET_ROOT}}/myapp
+
+      - name: Upload artifact for deployment job
+        uses: actions/upload-artifact@v3
+        with:
+          name: .net-app
+          path: ${{env.DOTNET_ROOT}}/myapp
+
+  deploy:
+    runs-on: windows-latest
+    needs: build
+    environment:
+      name: 'Production'
+      url: ${{ steps.deploy-to-webapp.outputs.webapp-url }}
+    permissions:
+      id-token: write #This is required for requesting the JWT
+
+    steps:
+      - name: Download artifact from build job
+        uses: actions/download-artifact@v3
+        with:
+          name: .net-app
+
+      - name: Login to Azure
+        uses: azure/login@v1
+        with:
+          client-id: ${{ secrets.AZUREAPPSERVICE_CLIENTID_C1D5062B8B5042EABD12B5387F58F077 }}
+          tenant-id: ${{ secrets.AZUREAPPSERVICE_TENANTID_597D734A4729491BBF79157096426D16 }}
+          subscription-id: ${{ secrets.AZUREAPPSERVICE_SUBSCRIPTIONID_8A4A50146EDF4649B9E1CE4F91D020BC }}
+
+      - name: Deploy to Azure Web App
+        id: deploy-to-webapp
+        uses: azure/webapps-deploy@v2
+        with:
+          app-name: 'headlessblazor'
+          slot-name: 'Production'
+          package: .
+