Fix Docker build path in GitHub Actions workflow

Co-authored-by: jongalloway <[email protected]>

Author: Copilot

.github/workflows/build.yml

@@ -282,7 +282,7 @@ jobs:
     - name: Build Docker image (test build)
       run: |
         echo "🐳 Building Docker image for testing..."
-        docker build -t nlwebnet-demo:test .
+        docker build -f deployment/docker/Dockerfile -t nlwebnet-demo:test .
         echo "✅ Docker build successful"
 
     - name: Test Docker image

samples/Demo/NLWebNet.Demo.csproj

@@ -7,6 +7,14 @@
     <RootNamespace>NLWebNet.Demo</RootNamespace>
     <UserSecretsId>031db3ba-2870-4c49-b002-5f532463e55e</UserSecretsId>
   </PropertyGroup>
+
+  <!-- Container configuration -->
+  <PropertyGroup>
+    <ContainerImageName>nlwebnet-demo</ContainerImageName>
+    <ContainerImageTag>latest</ContainerImageTag>
+    <ContainerPort>8080</ContainerPort>
+    <ContainerWorkingDirectory>/app</ContainerWorkingDirectory>
+  </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\src\NLWebNet\NLWebNet.csproj" />
   </ItemGroup><ItemGroup>