feat: add GitHub Actions workflow for building backend and frontend projects

Author: jamesmontemagno

.github/workflows/build.yml

@@ -0,0 +1,31 @@
+name: Build Backend and Frontend
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        project:
+          - SampleApp/BackEnd/BackEnd.csproj
+          - SampleApp/FrontEnd/FrontEnd.csproj
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v2
+        with:
+          dotnet-version: '9.0.x'
+
+      - name: Restore dependencies
+        run: dotnet restore ${{ matrix.project }}
+
+      - name: Build project
+        run: dotnet build ${{ matrix.project }} --no-restore --configuration Release

SampleApp/BackEnd/Program.cs

@@ -7,6 +7,8 @@
 // Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
 builder.Services.AddOpenApi(options =>
 {
+    // current workaround for port forwarding in codespaces
+    // https://github.com/dotnet/aspnetcore/issues/57332
     options.AddDocumentTransformer((document, context, ct) =>
     {
         document.Servers = [];