Add experimental attribute.

Author: mitchdenny

playground/AzureContainerApps/AzureContainerApps.AppHost/Program.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#pragma warning disable ASPIREACADOMAINS001 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
+
 var builder = DistributedApplication.CreateBuilder(args);
 
 var customDomain = builder.AddParameter("customDomain");

src/Aspire.Hosting.Azure.AppContainers/ContainerAppExtensions.cs

@@ -5,6 +5,7 @@
 using Azure.Provisioning.AppContainers;
 using Azure.Provisioning.Expressions;
 using Azure.Provisioning;
+using System.Diagnostics.CodeAnalysis;
 
 namespace Aspire.Hosting;
 
@@ -52,6 +53,7 @@ public static class ContainerAppExtensions
     ///        });
     /// </code>
     /// </example>
+    [Experimental("ASPIREACADOMAINS001", UrlFormat = "https://aka.ms/dotnet/aspire/diagnostics#{0}")]
     public static void ConfigureCustomDomain(this ContainerApp app, IResourceBuilder<ParameterResource> customDomain, IResourceBuilder<ParameterResource> certificateName)
     {
         if (app.ParentInfrastructure is not ResourceModuleConstruct module)

tests/Aspire.Hosting.Azure.Tests/AzureContainerAppsTests.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#pragma warning disable ASPIREACADOMAINS001 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
+
 using System.Runtime.CompilerServices;
 using Aspire.Hosting.ApplicationModel;
 using Aspire.Hosting.Utils;