Added d.r.c banner on main page

index-commercial.html

@@ -135,7 +135,12 @@ <h3>Technology Topics</h3>
     </div>
   </div>
 </nav>
-
+<div id="banner" style="width: 100%; background-color: #fff4cc; padding: 1rem; text-align: center; z-index: 1000;">
+  <p>
+    <strong>OpenShift docs are moving and will soon only be available at <a href="https://docs.redhat.com/en/" style="color: #0C5460 !important" class="link-primary">docs.redhat.com</a>, the home of all Red Hat product documentation. Explore the <a href="https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/about/index" style="color: #0C5460 !important" class="link-primary">new docs experience</a> today.
+    </strong>
+  </p>
+</div>
 <header class="masthead masthead-docs text-center">
   <div class="container">
     <div class="title-inner">