Update Dashboard extensions documentation with OCI installation via Rancher UI

Author: jtomasek

asciidoc/components/akri.adoc

@@ -109,6 +109,8 @@ In case the protocol used by your device isn't covered by an existing discovery
 
 Akri Dashboard Extension allows you to use Rancher Dashboard user interface to manage and monitor leaf devices and run workloads once these devices are discovered.
 
+See <<components-rancher-dashboard-extensions,Rancher Dashboard Extensions>> for installation guidance.
+
 Once the extension is installed you can navigate to any Akri-enabled managed cluster using cluster explorer. Under *Akri* navigation group you can see Configurations and Instances sections.
 
 image::akri-extension-configurations.png[]

asciidoc/components/rancher-dashboard-extensions.adoc

@@ -10,8 +10,9 @@ ifdef::env-github[]
 :caution-caption: :fire:
 :warning-caption: :warning:
 endif::[]
+:imagesdir: ../images/
 
-Extensions allow users, developers, partners, and customers to extend and enhance the Rancher UI. SUSE Edge 3.0 provides KubeVirt and Akri dashboard extensions.
+Extensions allow users, developers, partners, and customers to extend and enhance the Rancher UI. SUSE Edge 3.1 provides KubeVirt and Akri dashboard extensions.
 
 See `https://ranchermanager.docs.rancher.com/integrations-in-rancher/rancher-extensions[Rancher documentation]` for general information about Rancher Dashboard Extensions.
 
@@ -34,7 +35,41 @@ Or with Fleet by creating a dedicated GitRepo resource. For more information see
 
 == Installation
 
-All SUSE Edge 3.0 components including dashboard extensions are distributed as OCI artifacts. Rancher Dashboard Apps/Marketplace does not support OCI based Helm repositories `https://github.com/rancher/dashboard/issues/9815[yet]`. Therefore, to install SUSE Edge Extensions you can use Helm or Fleet:
+All SUSE Edge 3.1 components including dashboard extensions are distributed as OCI artifacts. To install SUSE Edge Extensions you can use Rancher Dashboard UI, Helm or Fleet:
+
+=== Installing with Rancher Dashboard UI
+
+1. Click *Extensions* in the *Configuration* section of the navigation sidebar.
+2. On the Extensions page click the three dot menu at the top right and select *Manage Repositories*
++
+Each extension is distributed via it's own OCI artefact. Therefore it is required to add repositories for each extension we want to install.
+
+3. On the *Repositories page* click `Create` button.
+4. In the form, specify the repository name and OCI artefact URL and click `Create`
++
+Akri Dashboard Extension Repository URL:
+`oci://registry.suse.com/edge/3.1/akri-dashboard-extension-chart`
++
+KubeVirt Dashboard Extension Repository URL:
+`oci://registry.suse.com/edge/3.1/kubevirt-dashboard-extension-chart`
++
+image::dashboard-extensions-create-oci-repository.png[]
+
+5. The extension repository is added to the list and showing the `Active` state.
++
+image::dashboard-extensions-repositories-list.png[]
+
+6. Navigate back to the *Extensions* in the *Configuration* section of the navigation sidebar.
++
+In the *Available* tab you can see the extensions available for installation.
++
+image::dashboard-extensions-available-extensions.png[]
+
+7. On the extension card click `Install` and confirm the installation.
++
+Once the extension is installed Rancher UI will prompt to reload the page as described in the `https://ranchermanager.docs.rancher.com/integrations-in-rancher/rancher-extensions#installing-extensions[Installing Extensions Rancher documentation page]`.
+
+
 
 === Installing with Helm