.NET: [Feature Branch] Introduce Azure OpenAI config for .NET pipeline (#2106)

Also fixes an issue where we were trying to start docker containers for integration tests on Windows, which doesn't work.

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.github/workflows/dotnet-build-and-test.yml

@@ -150,10 +150,14 @@ jobs:
           tenant-id: ${{ secrets.AZURE_TENANT_ID }}
           subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
 
+        # This setup action is required for both Durable Task and Azure Functions integration tests.
+        # We only run it on Ubuntu since the Durable Task and Azure Functions features are not available
+        # on .NET Framework (net472) which is what we use the Windows runner for.
       - name: Set up Durable Task and Azure Functions Integration Test Emulators
-        if: github.event_name != 'pull_request' && matrix.integration-tests
+        if: github.event_name != 'pull_request' && matrix.integration-tests && matrix.os == 'ubuntu-latest'
         uses: ./.github/actions/azure-functions-integration-setup
         id: azure-functions-setup
+
       - name: Run Integration Tests
         shell: bash
         if: github.event_name != 'pull_request' && matrix.integration-tests
@@ -175,6 +179,9 @@ jobs:
           OpenAI__ApiKey: ${{ secrets.OPENAI__APIKEY }}
           OpenAI__ChatModelId: ${{ vars.OPENAI__CHATMODELID }}
           OpenAI__ChatReasoningModelId: ${{ vars.OPENAI__CHATREASONINGMODELID }}
+          # Azure OpenAI Models
+          AZURE_OPENAI_CHAT_DEPLOYMENT_NAME: ${{ vars.AZUREOPENAI__CHATDEPLOYMENTNAME }}
+          AZURE_OPENAI_ENDPOINT: ${{ vars.AZUREOPENAI__ENDPOINT }}
           # Azure AI Foundry
           AzureAI__Endpoint: ${{ secrets.AZUREAI__ENDPOINT }}
           AzureAI__DeploymentName: ${{ vars.AZUREAI__DEPLOYMENTNAME }}

dotnet/tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/TestHelper.cs

@@ -116,16 +116,13 @@ internal sealed class TestHelper : IDisposable
 
     internal static ChatClient GetAzureOpenAIChatClient(IConfiguration configuration)
     {
-        string azureOpenAiEndpoint =
-            configuration["AZUREAI:ENDPOINT"] ?? // Defined in dotnet-build-and-test.yml (as AZUREAI__ENDPOINT)
-            configuration["AZURE_OPENAI_ENDPOINT"] ?? // Legacy
-            throw new InvalidOperationException("The required AZUREAI__ENDPOINT or AZURE_OPENAI_ENDPOINT env variable is not set.");
-        string azureOpenAiDeploymentName =
-            configuration["AZUREAI:DEPLOYMENTNAME"] ?? // Defined in dotnet-build-and-test.yml (as AZUREAI__DEPLOYMENTNAME)
-            configuration["AZURE_OPENAI_DEPLOYMENT"] ?? // Legacy
-            throw new InvalidOperationException("The required AZUREAI__DEPLOYMENTNAME or AZURE_OPENAI_DEPLOYMENT env variable is not set.");
+        string azureOpenAiEndpoint = configuration["AZURE_OPENAI_ENDPOINT"] ??
+            throw new InvalidOperationException("The required AZURE_OPENAI_ENDPOINT env variable is not set.");
+        string azureOpenAiDeploymentName = configuration["AZURE_OPENAI_CHAT_DEPLOYMENT_NAME"] ??
+            throw new InvalidOperationException("The required AZURE_OPENAI_CHAT_DEPLOYMENT_NAME env variable is not set.");
 
-        // Check if AZURE_OPENAI_KEY is provided for token-based authentication
+        // Check if AZURE_OPENAI_KEY is provided for key-based authentication.
+        // NOTE: This is not used for automated tests, but can be useful for local development.
         string? azureOpenAiKey = configuration["AZURE_OPENAI_KEY"];
 
         AzureOpenAIClient client = !string.IsNullOrEmpty(azureOpenAiKey)

dotnet/tests/Microsoft.Agents.AI.Hosting.AzureFunctions.IntegrationTests/SamplesValidation.cs

@@ -635,14 +635,10 @@ public sealed class SamplesValidation(ITestOutputHelper outputHelper) : IAsyncLi
             RedirectStandardError = true,
         };
 
-        string openAiEndpoint =
-            s_configuration["AZUREAI:ENDPOINT"] ?? // Defined in dotnet-build-and-test.yml (as AZUREAI__ENDPOINT)
-            s_configuration["AZURE_OPENAI_ENDPOINT"] ?? // Legacy
-            throw new InvalidOperationException("The required AZUREAI__ENDPOINT or AZURE_OPENAI_ENDPOINT env variable is not set.");
-        string openAiDeployment =
-            s_configuration["AZUREAI:DEPLOYMENTNAME"] ?? // Defined in dotnet-build-and-test.yml (as AZUREAI__DEPLOYMENTNAME)
-            s_configuration["AZURE_OPENAI_DEPLOYMENT"] ?? // Legacy
-            throw new InvalidOperationException("The required AZUREAI__DEPLOYMENTNAME or AZURE_OPENAI_DEPLOYMENT env variable is not set.");
+        string openAiEndpoint = s_configuration["AZURE_OPENAI_ENDPOINT"] ??
+            throw new InvalidOperationException("The required AZURE_OPENAI_ENDPOINT env variable is not set.");
+        string openAiDeployment = s_configuration["AZURE_OPENAI_CHAT_DEPLOYMENT_NAME"] ??
+            throw new InvalidOperationException("The required AZURE_OPENAI_CHAT_DEPLOYMENT_NAME env variable is not set.");
 
         // Set required environment variables for the function app (see local.settings.json for required settings)
         startInfo.EnvironmentVariables["AZURE_OPENAI_ENDPOINT"] = openAiEndpoint;