diff --git a/cli/azd/pkg/tools/dotnet/dotnet.go b/cli/azd/pkg/tools/dotnet/dotnet.go
index 5db5db7124f..476b0d58127 100644
--- a/cli/azd/pkg/tools/dotnet/dotnet.go
+++ b/cli/azd/pkg/tools/dotnet/dotnet.go
@@ -167,6 +167,9 @@ func (cli *dotNetCli) PublishContainer(
 	)
 
 	runArgs = runArgs.WithEnv([]string{
+		fmt.Sprintf("DOTNET_CONTAINER_REGISTRY_UNAME=%s", username),
+		fmt.Sprintf("DOTNET_CONTAINER_REGISTRY_PWORD=%s", password),
+		// also set the legacy < .NET 9 vars
 		fmt.Sprintf("SDK_CONTAINER_REGISTRY_UNAME=%s", username),
 		fmt.Sprintf("SDK_CONTAINER_REGISTRY_PWORD=%s", password),
 	})