Add AKS starter deployment E2E test

src/Aspire.Hosting.Kubernetes/Extensions/ResourceExtensions.cs

@@ -140,8 +140,22 @@ internal static StatefulSet ToStatefulSet(this IResource resource, KubernetesRes
             },
         };
 
+        // Defense-in-depth: deduplicate ports by underlying value and protocol.
+        // The primary fix is in ProcessEndpoints() which skips the DefaultHttpsEndpoint
+        // (matching the core framework's SetBothPortsEnvVariables behavior). This dedup
+        // remains as a safety net for edge cases where multiple endpoints might still
+        // resolve to the same port value.
+        // See: https://github.com/dotnet/aspire/issues/14029
+        var addedPorts = new HashSet<(string Port, string Protocol)>();
         foreach (var (_, mapping) in context.EndpointMappings)
         {
+            var portValue = mapping.Port.ValueString ?? mapping.Port.ToScalar();
+            var portKey = (portValue, mapping.Protocol);
+            if (!addedPorts.Add(portKey))
+            {
+                continue; // Skip duplicate port/protocol combinations
+            }
+
             service.Spec.Ports.Add(
                 new()
                 {
@@ -268,8 +282,17 @@ private static ContainerV1 WithContainerPorts(this ContainerV1 container, Kubern
             return container;
         }
 
+        // Defense-in-depth: deduplicate container ports (same rationale as ToService() above).
+        var addedPorts = new HashSet<(string Port, string Protocol)>();
         foreach (var (_, mapping) in context.EndpointMappings)
         {
+            var portValue = mapping.Port.ValueString ?? mapping.Port.ToScalar();
+            var portKey = (portValue, mapping.Protocol);
+            if (!addedPorts.Add(portKey))
+            {
+                continue;
+            }
+
             container.Ports.Add(
                 new()
                 {

src/Aspire.Hosting.Kubernetes/KubernetesResource.cs

@@ -171,7 +171,26 @@ private void ProcessEndpoints()
 
             if (resolved.TargetPort.Value is null)
             {
-                // Default endpoint for ProjectResource - deployment tool assigns port
+                // Default endpoint for ProjectResource - deployment tool assigns port.
+                // Skip the default https endpoint — the container won't listen on HTTPS.
+                // In Kubernetes, TLS termination is handled by ingress or service mesh.
+                // We still create an EndpointMapping (needed for service discovery env vars)
+                // but reuse the http endpoint's HelmValue so no duplicate K8s port is generated.
+                // This matches the core framework's SetBothPortsEnvVariables() behavior,
+                // which skips DefaultHttpsEndpoint when setting HTTPS_PORTS.
+                // See: https://github.com/dotnet/aspire/issues/14029
+                if (resource is ProjectResource projectResource &&
+                    endpoint == projectResource.DefaultHttpsEndpoint)
+                {
+                    // Find the existing http endpoint's HelmValue to share it
+                    var httpMapping = EndpointMappings.Values.FirstOrDefault(m => m.Scheme == "http");
+                    if (httpMapping is not null)
+                    {
+                        EndpointMappings[endpoint.Name] = new(endpoint.UriScheme, GetKubernetesProtocolName(endpoint.Protocol), resource.Name.ToServiceName(), httpMapping.Port, endpoint.Name);
+                        continue;
+                    }
+                }
+
                 GenerateDefaultProjectEndpointMapping(endpoint);
                 continue;
             }

src/Aspire.Hosting/Aspire.Hosting.csproj

@@ -118,6 +118,7 @@
     <InternalsVisibleTo Include="Aspire.Hosting.DotnetTool.Tests" />
     <InternalsVisibleTo Include="Aspire.TestUtilities" />
     <InternalsVisibleTo Include="Aspire.Cli.Tests" />
+    <InternalsVisibleTo Include="Aspire.Hosting.Kubernetes" />
     <InternalsVisibleTo Include="Aspire.Hosting.RemoteHost" />
     <InternalsVisibleTo Include="Aspire.Hosting.RemoteHost.Tests" />
     <InternalsVisibleTo Include="Aspire.Hosting.CodeGeneration.TypeScript" />