chore: worker setup for docs

apps/docs/app/entry.server.tsx

@@ -0,0 +1,38 @@
+import type { AppLoadContext, EntryContext } from 'react-router';
+import { ServerRouter } from 'react-router';
+import { isbot } from 'isbot';
+import { renderToReadableStream } from 'react-dom/server';
+
+export default async function handleRequest(
+  request: Request,
+  responseStatusCode: number,
+  responseHeaders: Headers,
+  routerContext: EntryContext,
+  _loadContext: AppLoadContext
+) {
+  let shellRendered = false;
+  const userAgent = request.headers.get('user-agent');
+
+  const body = await renderToReadableStream(
+    <ServerRouter context={routerContext} url={request.url} />,
+    {
+      onError(error: unknown) {
+        responseStatusCode = 500;
+        if (shellRendered) {
+          console.error(error);
+        }
+      }
+    }
+  );
+  shellRendered = true;
+
+  if ((userAgent && isbot(userAgent)) || routerContext.isSpaMode) {
+    await body.allReady;
+  }
+
+  responseHeaders.set('Content-Type', 'text/html');
+  return new Response(body, {
+    headers: responseHeaders,
+    status: responseStatusCode
+  });
+}