docs: run local --proxy blog (#5460)

* docs: `run local --proxy` blog

* add links

* Update site/content/blogs/release-v132.en.md

* better naming

* address feedback from @iamhopaul123

---------

Co-authored-by: Wanxian Yang <79273084+Lou1415926@users.noreply.github.com>

site/content/blogs/release-v132.en.md

@@ -18,7 +18,7 @@ Thanks to every one of you who shows love and support for AWS Copilot.
 
 Copilot v1.32 brings big enhancements to help you develop more flexibly and efficiently:
 
-- **`copilot run local --proxy`**:
+- **`copilot run local --proxy`**: Proxy outbound traffic from your local containers to services and RDS instances in your environment. [See detailed section](#copilot-run-local---proxy)
 - **`copilot run local --watch`**: Automatically rebuilds your containers when you make changes to your code. [See detailed section](#copilot-run-local---watch)
 - **Importing ALBs**: You can front your Load-Balanced Web Services with existing ALBs. [See detailed section](#imported-ALBs)
 
@@ -32,7 +32,16 @@ Copilot v1.32 brings big enhancements to help you develop more flexibly and effi
 
     See the section [Overview](../docs/concepts/overview.en.md) for a more detailed introduction to AWS Copilot.
 
-## 
+## `copilot run local --proxy`
+
+The new `--proxy` flag on `copilot run local` enhances your local development experience by making it possible for your local containers to talk to services deployed in your environment.
+
+For example, imagine you have an environment with two services, `users` and `orders`, that both have [Service Connect](../docs/manifest/lb-web-service.md#network-connect) enabled.
+Additionally, `orders` has an [RDS addon](../docs/developing/addons/workload.md) deployed that it uses for storing data.
+You can now run `copilot run local --proxy --name orders` and your local `orders` containers will be able to reach:
+
+- The `users` service, using its service connect URL (defaults to `http://users:<port>`)
+- `orders`'s RDS database, using any DB instance url (like `app-env-orders-random-characters.us-west-2.rds.amazonaws.com:5432`) or DB cluster URL.
 
 ## `copilot run local --watch`