Added a workflow

Author: mcasperson

.github/workflows/build.yaml

@@ -0,0 +1,35 @@
+
+name: Build and Publish .NET Core App
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Restore dependencies
+        run: dotnet restore
+
+      - name: Build
+        run: dotnet build --configuration Release --no-restore
+
+      - name: Publish
+        run: dotnet publish --configuration Release --output ./publish
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: published-app
+          path: ./publish