fix(platform): redirect user to /signin after signout and do not ca…

…che `index.html`

config/nginx.conf

@@ -10,6 +10,7 @@ server {
     location / {
         root   /usr/share/nginx/html;
         index  index.html;
+        add_header Cache-Control no-cache;
         # First attempt to serve request as file, then as directory, then fall back to redirecting to index.html
         try_files $uri $uri/ $uri.html /index.html;
     }

src/pages/workspace/workspace_page.tsx

@@ -249,7 +249,7 @@ export function WorkspacePage() {
     setIsAccountPopoverOpen(false);
     axios.post(getApiUrl('/api/signout')).then(
       () => {
-        window.location.replace('/');
+        window.location.replace('/signin');
         setTimeout(() => window.location.reload(), 500);
       },
       () => {