Create build-main.yml

Author: SashveerRamjathan

.github/workflows/build-main.yml

@@ -0,0 +1,45 @@
+name: Build .NET 8 Lambda
+
+on:
+  push:
+    branches: main 
+  pull_request:
+    branches: main
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      
+    - name: Setup .NET 8
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: '8.0.x'
+        
+    - name: Cache NuGet packages
+      uses: actions/cache@v4
+      with:
+        path: ~/.nuget/packages
+        key: ${{ runner.os }}-nuget-${{ hashFiles('**/*.csproj') }}
+        restore-keys: |
+          ${{ runner.os }}-nuget-
+          
+    - name: Restore dependencies
+      run: dotnet restore
+      
+    - name: Build
+      run: dotnet build --no-restore --configuration Release
+      
+    - name: Package Lambda function
+      run: dotnet lambda package --configuration Release
+      
+    - name: Upload build artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: lambda-package
+        path: '**/bin/Release/net8.0/publish/*.zip'
+        retention-days: 30