Update domains.mdx add table

Author: lionello

docs/concepts/domains.mdx

@@ -114,3 +114,12 @@ As of now, the Pulumi provider does not support [Defang BYOC](./defang-byoc.md)
 :::
   </TabItem>
 </Tabs>
+
+## Current Support
+
+| Provider | BYOD |
+| --- | --- |
+| [Playground](/docs/providers/playground) | ✅ no apex domains |
+| [AWS](/docs/providers/aws) | ✅ |
+| [DigitalOcean](/docs/providers/digitalocean) | ❌ |
+| [GCP](/docs/providers/gcp) | ✅ |