don't show build/test instructions in sandbox environment

Author: thomasyuill-livekit

components/welcome.tsx

@@ -11,6 +11,8 @@ import { cn } from '@/lib/utils';
 import EmbedPopupAgentClient from './embed-popup/agent-client';
 import { ThemeToggle } from './theme-toggle';
 
+const IS_LOCAL_ENVIRONMENT = process.env.VERCEL === undefined;
+
 export default function Welcome() {
   const router = useRouter();
   const pathname = usePathname();
@@ -135,15 +137,18 @@ export default function Welcome() {
               <pre className="border-separator2 bg-bg2 overflow-auto rounded-md border px-2 py-1">
                 <code className="font-mono">{`<script src="${embedPopupUrl}"></script>`}</code>
               </pre>
-              <p className="text-fg4 my-4 text-sm">
-                To apply local changes, run{' '}
-                <code className="text-fg0">pnpm build-embed-popup-script</code>.<br />
-                Test your latest build at{' '}
-                <a href="/popup" target="_blank" rel="noopener noreferrer" className="underline">
-                  {popupTestUrl}
-                </a>
-                .
-              </p>
+              {/* Dont show build/test instructions in sandbox environment */}
+              {IS_LOCAL_ENVIRONMENT && (
+                <p className="text-fg4 my-4 text-sm">
+                  To apply local changes, run{' '}
+                  <code className="text-fg0">pnpm build-embed-popup-script</code>.<br />
+                  Test your latest build at{' '}
+                  <a href="/popup" target="_blank" rel="noopener noreferrer" className="underline">
+                    {popupTestUrl}
+                  </a>
+                  .
+                </p>
+              )}
             </div>
             <div className="flex justify-center pt-8">
               <div className="text-fgAccent flex gap-1">