Merge pull request #55836 from tshwartz/TELCODOCS-1142

TELCODOCS-1142: MGMT-10209 assisted-service ICSP support

Author: abhatt-rh

modules/ztp-configuring-the-cluster-for-a-disconnected-environment.adoc

@@ -6,7 +6,7 @@
 [id="ztp-configuring-the-cluster-for-a-disconnected-environment_{context}"]
 = Configuring the hub cluster to use a disconnected mirror registry
 
-You can configure the hub cluster to use a disconnected mirror registry for a disconnected environment.
+You can configure the hub cluster to use a disconnected mirror registry for a disconnected environment. 
 
 .Prerequisites
 
@@ -43,7 +43,7 @@ data:
       mirror-by-digest-only = true
 ----
 <1> The mirror registry’s certificate used when creating the mirror registry.
-<2> The configuration for the mirror registry.
+<2> The configuration file for the mirror registry. The mirror registry configuration adds mirror information to `/etc/containers/registries.conf` in the Discovery image. The mirror information is stored in the `imageContentSources` section of the `install-config.yaml` file when passed to the installation program. The Assisted Service pod running on the HUB cluster fetches the container images from the configured mirror registry.  
 <3> The URL of the mirror registry.
 +
 This updates `mirrorRegistryRef` in the `AgentServiceConfig` custom resource, as shown below: