updated disconnected installation section

Closes: #150
Signed-off-by: Robert Guske <robert.guske@gmail.com>

Author: rguske

content/cluster-installation/disconnected/disconnected-installation.md

@@ -7,6 +7,7 @@ OpenShift Container Platform is designed to perform many automatic functions tha
 Source: [Understanding disconnected installation mirroring](https://docs.redhat.com/en/documentation/openshift_container_platform/4.21/html/installing_an_on-premise_cluster_with_the_agent-based_installer/understanding-disconnected-installation-mirroring)
 
 ---
+
 - [Disconnected Agent-Based Cluster Installation](#disconnected-agent-based-cluster-installation)
   - [How it works](#how-it-works)
   - [Connected Mirroring vs Disconnected Mirroring](#connected-mirroring-vs-disconnected-mirroring)
@@ -410,7 +411,7 @@ FATAL   * failed to validate network yaml for host 0, install nmstate package, e
 
 ### Installing Podman Offline
 
-1. Mount a RHEL installation iso file to the system (VM or BM via Board Management Controller).
+- Mount a RHEL installation iso file to the system (VM or BM via Board Management Controller).
 
 Check e.g. with `lsblk` for the disconnected "cdrom" (iso) device:
 
@@ -427,17 +428,17 @@ sda             8:0    0   120G  0 disk
 sr0            11:0    1    11G  0 rom
 ```
 
-2. Create a folder in which the iso content will be accessible:
+- Create a folder in which the iso content will be accessible:
 
 `mkdir -p /mnt/rhel-iso`
 
-3. Mount the connected iso accordingly:
+- Mount the connected iso accordingly:
 
 `mount -o loop /path/to/rhel.iso /mnt/rhel-iso`
 
 Example in my case with a VM: `mount -o loop /dev/sr0 /mnt/rhel-iso`
 
-4. Create a Local Repository:
+- Create a Local Repository:
 
 ```code
 cat <<EOF | tee /etc/yum.repos.d/rhel9-iso.repo
@@ -455,7 +456,7 @@ gpgcheck=0
 EOF
 ```
 
-5. Install Podman and `nmstate`
+- Install Podman and `nmstate`
 
 `dnf install podman -y`
 `dnf install nmstate -y`
@@ -815,16 +816,11 @@ Ensure that clis are in your $PATH. Otherwise `export PATH=/usr/local/bin:$PATH`
 
 The oc-mirror plugin v2 automatically generates the following custom resources:
 
-- `ImageDigestMirrorSet` (IDMS)
-Handles registry mirror rules when using image digest pull specifications. Generated if at least one image of the image set is mirrored by digest.
-- `ImageTagMirrorSet` (ITMS)
-Handles registry mirror rules when using image tag pull specifications. Generated if at least one image from the image set is mirrored by tag.
-- `CatalogSource`
-Retrieves information about the available Operators in the mirror registry. Used by Operator Lifecycle Manager (OLM) Classic.
-- `ClusterCatalog`
-Retrieves information about the available cluster extensions (which includes Operators) in the mirror registry. Used by OLM v1.
-- `UpdateService`
-Provides update graph data to the disconnected environment. Used by the OpenShift Update Service.
+- `ImageDigestMirrorSet` (IDMS): Handles registry mirror rules when using image digest pull specifications. Generated if at least one image of the image set is mirrored by digest.
+- `ImageTagMirrorSet` (ITMS): Handles registry mirror rules when using image tag pull specifications. Generated if at least one image from the image set is mirrored by tag.
+- `CatalogSource`: Retrieves information about the available Operators in the mirror registry. Used by Operator Lifecycle Manager (OLM) Classic.
+- `ClusterCatalog`: Retrieves information about the available cluster extensions (which includes Operators) in the mirror registry. Used by OLM v1.
+- `UpdateService`: Provides update graph data to the disconnected environment. Used by the OpenShift Update Service.
 
 Mirror the images from the specified image set configuration to the disk by running the following command: