Add WithBun() documentation to JavaScript integration page

src/frontend/src/content/docs/integrations/frameworks/javascript.mdx

@@ -18,7 +18,7 @@ import jsIcon from '@assets/icons/javascript.svg';
   data-zoom-off
 />
 
-The Aspire JavaScript/TypeScript hosting integration enables you to orchestrate JavaScript applications alongside your Aspire projects in the AppHost. This integration provides a unified approach to running JavaScript applications with support for multiple package managers (npm, yarn, pnpm), runtimes (Node.js), and build tools (Vite, and more).
+The Aspire JavaScript/TypeScript hosting integration enables you to orchestrate JavaScript applications alongside your Aspire projects in the AppHost. This integration provides a unified approach to running JavaScript applications with support for multiple package managers (npm, yarn, pnpm, bun), runtimes (Node.js), and build tools (Vite, and more).
 
 :::tip[Package rename]
 In Aspire 13.0, the `Aspire.Hosting.NodeJs` package was renamed to `Aspire.Hosting.JavaScript` to better reflect its broader support for JavaScript applications.
@@ -106,7 +106,7 @@ var viteApp = builder.AddViteApp("vite-app", "./vite-app")
 
 - **Development script**: Runs the "dev" script (typically `vite`) during local development
 - **Build script**: Runs the "build" script (typically `vite build`) when publishing
-- **Package manager**: Uses npm by default, but can be customized with `WithYarn()` or `WithPnpm()`
+- **Package manager**: Uses npm by default, but can be customized with `WithYarn()`, `WithPnpm()`, or `WithBun()`
 
 The method accepts the same parameters as `AddJavaScriptApp`:
 
@@ -183,6 +183,39 @@ var customApp = builder.AddJavaScriptApp("custom-app", "./custom-app")
 
 When publishing, Aspire uses `pnpm install --frozen-lockfile` if `pnpm-lock.yaml` exists, otherwise it uses `pnpm install`.
 
+### Use Bun
+
+To use Bun as the package manager, call the `WithBun` extension method:
+
+```csharp title="C# — AppHost.cs" "WithBun"
+var builder = DistributedApplication.CreateBuilder(args);
+
+var app = builder.AddViteApp("app", "./app")
+    .WithBun();
+
+// Customize Bun with additional flags
+var customApp = builder.AddViteApp("custom-app", "./custom-app")
+    .WithBun(installArgs: ["--frozen-lockfile"]);
+
+// After adding all resources, run the app...
+```
+
+When publishing, Aspire uses `bun install --frozen-lockfile` if `bun.lock` or `bun.lockb` exists, otherwise it uses `bun install`.
+
+Bun supports passing script arguments without the `--` separator, so commands like `bun run dev --port 3000` work without needing `bun run dev -- --port 3000`.
+
+When publishing to a container, `WithBun()` automatically configures a Bun build image (`oven/bun:1`) since Bun is not available in the default Node.js base images. To use a specific Bun version, configure a custom build image:
+
+```csharp title="C# — AppHost.cs"
+var builder = DistributedApplication.CreateBuilder(args);
+
+var app = builder.AddViteApp("app", "./app")
+    .WithBun()
+    .WithDockerfileBaseImage(buildImage: "oven/bun:1.1");
+
+// After adding all resources, run the app...
+```
+
 ## Customize scripts
 
 You can customize which scripts run during development and build: