Rel Notes for mirroring feature OSDOCS-15543

Author: Lisa Pettyjohn

release_notes/ocp-4-20-release-notes.adoc

@@ -715,6 +715,15 @@ Formerly Technology Preview and now Generally Available, the `oc adm upgrade rec
 
 For more information, see xref:../updating/updating_a_cluster/updating-cluster-cli.adoc#update-upgrading-cli[Updating a cluster by using the CLI].
 
+[id="ocp-release-notes-openshift-cli-mirror-environment-var-imagepaths_{context}"]
+==== oc-mirror v2 mirrors container images in environment variables of deployment templates (General Availability)
+
+Operand images, dynamically deployed by operator controllers at runtime, are typically referenced by environment variables within the controller’s Deployment template. 
+
+Before {product-title} 4.20, while `oc-mirror` plugin v2 could access these environment variables, it attempted to mirror all values, including non-image references, for example, log levels, leading to failures. Now {product-title} identifies and mirrors only the container images referenced in these environment variables.
+
+For more information, see xref:../disconnected/mirroring/about-installing-oc-mirror-v2.adoc#oc-mirror-imageset-config-parameters-v2[Mirroring images for a disconnected installation by using the oc-mirror plugin v2].
+
 [id="ocp-release-notes-osdk_{context}"]
 === Operator development