adds docs Dockerfile

docs/src/content/docs/index.mdx

@@ -9,13 +9,14 @@ hero:
   image:
     file: ../../assets/logo_dark.svg
   actions:
+    - text: Visit the demo
+      link: https://demo.wanderer.sh
+      icon: rocket
+      variant: primary
     - text: Read the docs
       link: /getting-started/installation/
       icon: right-arrow
-      variant: primary
+    
-    - text: Visit the demo
-      link: https://demo.wanderer.sh
-      icon: external
 ---
 
 import { Card, CardGrid } from '@astrojs/starlight/components';