ci: Build WinAppSDK (#1158)

build/workflow/pipeline.yml

@@ -69,4 +69,5 @@ stages:
   - template: stage-build-ios.yml
   - template: stage-uitests-ios.yml
   - template: stage-build-android.yml
-  - template: stage-uitests-android.yml
+  - template: stage-uitests-android.yml
+  - template: stage-build-winappsdk.yml

build/workflow/stage-build-winappsdk.yml

@@ -0,0 +1,30 @@
+jobs:
+- job: WinAppSDK
+
+  pool:
+    vmImage: windows-2022
+
+  steps:
+  - template: templates/dotnet-workload-install-windows.yml
+  - template: templates/canary-updater.yml
+  - template: templates/gitversion.yml
+  - template: templates/set-app-versions.yml
+
+  - task: MSBuild@1
+    inputs:
+      solution: $(build.sourcesdirectory)/samples/Uno.Toolkit.WinUI.Samples/Uno.Toolkit.WinUI.Samples.Windows.Desktop/Uno.Toolkit.WinUI.Samples.Windows.Desktop.csproj
+      msbuildLocationMethod: version
+      msbuildVersion: latest
+      msbuildArchitecture: x86
+      msbuildArguments: /r /t:Publish /m /v:m /p:Configuration=Release /p:GenerateAppxPackageOnBuild=true /detailedsummary /bl:$(build.artifactstagingdirectory)/build-winappsdk.binlog
+      clean: false
+      restoreNugetPackages: false
+      logProjectEvents: false
+      createLogFile: false
+
+  - task: PublishBuildArtifacts@1
+    condition: always()
+    inputs:
+      PathtoPublish: $(build.sourcesdirectory)/samples/Uno.Toolkit.WinUI.Samples/Uno.Toolkit.WinUI.Samples.Windows.Desktop/bin/Release/
+      ArtifactName: WinAppSDK
+      ArtifactType: Container