add missing links and preview reference

Author: davemooreuws

docs/providers/index.mdx

@@ -40,7 +40,7 @@ Currently, both the Pulumi and Terraform providers use the same underlying cloud
 | [Batch](/batch)                        | [AWS Batch](/providers/mappings/aws/batch)                   | Coming soon                                         | [GCP Batch](/providers/mappings/gcp/batch)           | Custom                                                                             |
 | [Schedules](/schedules)                | [CloudWatch Event Bridge](/providers/mappings/aws/schedules) | [Dapr Binding](/providers/mappings/azure/schedules) | [Cloud Scheduler](/providers/mappings/gcp/schedules) | Custom                                                                             |
 | [Websockets](/websockets)              | [API Gateway](/providers/mappings/aws/websockets)            | Not implemented                                     | Not implemented                                      | Custom                                                                             |
-| [Websites](/websites)                  | [AWS Cloudfront](/providers/mappings/aws/websites)           | [Front Door](/providers/mappings/azure/websites)    | Not implemented                                      | Custom                                                                             |
+| [Websites](/websites)                  | [AWS Cloudfront](/providers/mappings/aws/websites)           | [Front Door](/providers/mappings/azure/websites)    | [Cloud CDN](/providers/mappings/gcp/websites)        | Custom                                                                             |
 | [Storage](/storage#buckets)            | [S3](/providers/mappings/aws/storage)                        | [Blob Storage](/providers/mappings/azure/storage)   | [Cloud Storage](/providers/mappings/gcp/storage)     | SeaweedFS                                                                          |
 | [Key Value Stores](/keyvalue)          | [DynamoDB](/providers/mappings/aws/keyvalue)                 | [Table Storage](/providers/mappings/azure/keyvalue) | [FireStore](/providers/mappings/gcp/keyvalue)        | BoltDB                                                                             |
 | [SQL Databases](/sql)                  | [RDS](/providers/mappings/aws/sql)                           | [Azure Database](/providers/mappings/azure/sql)     | [Cloud SQL](/providers/mappings/gcp/sql)             | Docker                                                                             |

docs/reference/preview-features/index.mdx

@@ -17,7 +17,7 @@ Each preview feature will have its own documentation page, which will include in
 | [docker-providers](/providers/custom/docker) | CLI v1.39.0                                                                                     | [feedback](https://github.com/nitrictech/nitric/issues/605) |
 | [sql-databases](/sql)                        | CLI v1.42.0<br/>AWS Provider v1.6.0<br/>Azure Provider v1.9.0<br/>AWS Terraform Provider v1.8.0 | [feedback](https://github.com/nitrictech/nitric/issues/684) |
 | [batch-services](/batch)                     | CLI v1.54.0<br/>AWS Provider v1.14.0<br/>GCP Provider v1.14.0                                   | [feedback](https://github.com/nitrictech/nitric/issues/685) |
-| [websites](/websites)                        | CLI v1.58.0<br/>AWS Provider v1.18.0<br/>Azure Provider v1.19.4                                 | [feedback](https://github.com/nitrictech/nitric/issues/748) |
+| [websites](/websites)                        | CLI v1.58.0<br/>AWS Provider v1.18.0<br/>Azure Provider v1.19.4<br/>GCP Provider v1.20.0        | [feedback](https://github.com/nitrictech/nitric/issues/748) |
 
 ## Released Preview Features
 

docs/websites.mdx

@@ -198,6 +198,14 @@ websites:
       url: http://localhost:4322
 ```
 
+## Custom Domains
+
+You can configure a custom domain for your website by following the instructions in the cloud provider documentation:
+
+- [AWS](/providers/pulumi/aws#websites)
+- [Azure](/providers/pulumi/azure#websites)
+- [Google Cloud](/providers/pulumi/gcp#websites)
+
 ## Cloud Service Mapping
 
 Each cloud provider comes with a set of default services used when deploying resources. You can find the default services for each cloud provider below.

src/config/index.ts

@@ -382,6 +382,10 @@ export const navigation: NavEntry[] = [
                 title: 'Schedules',
                 href: '/providers/mappings/gcp/schedules',
               },
+              {
+                title: 'Websites',
+                href: '/providers/mappings/gcp/websites',
+              },
               {
                 title: 'Storage',
                 href: '/providers/mappings/gcp/storage',