OSDOCS-2667: Add an architecture diagram

Author: xenolinux

images/oke-arch-ocp-stack.png

@@ -15,6 +15,8 @@ video, gaming, banking, and other applications. Its implementation in open
 Red Hat technologies lets you extend your containerized applications beyond a
 single cloud to on-premise and multi-cloud environments.
 
+image::oke-arch-ocp-stack.png[Red Hat {oke}]
+
 // The architecture presented here is meant to give you insights into how {product-title} works. It does this by stepping you through the process of installing an {product-title} cluster, managing the cluster, and developing and deploying applications on it. Along the way, this architecture describes:
 
 // * Major components of  {product-title}