Fix Gitea Actions container checkout failure by using setup-dotnet and deploy wrapper binary as build artifact

.gitea/workflows/ci.yml

@@ -9,12 +9,15 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-    container:
-      image: mcr.microsoft.com/dotnet/sdk:10.0
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
 
+      - name: Setup .NET SDK
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: '10.0.x'
+
       - name: Restore dependencies
         run: dotnet restore NixWslWrapper.sln
 
@@ -23,3 +26,12 @@ jobs:
 
       - name: Run unit tests
         run: dotnet test NixWslWrapper.sln --configuration Release --no-build --verbosity normal
+
+      - name: Publish single-file executable
+        run: dotnet publish src/NixWslWrapper.Cli/NixWslWrapper.Cli.csproj -c Release -r win-x64 --self-contained -p:PublishSingleFile=true -o ./dist
+
+      - name: Upload nix.exe artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: nix-windows-wrapper
+          path: ./dist/nix.exe