(DOCSP-44591) Adds step for removing statefulSet overrides for init containers. (#1958)

* (DOCSP-44591) Adds step for removing statefulSet overrides for init containers.

* Revises per tech review.

* Revises per second-round tech review.

Author: erabil-mdb

source/tutorial/plan-k8s-op-container-images.txt

@@ -254,6 +254,21 @@ You can also enable static containers during
       or :ref:`Remote Mode <deploy-om-container-remote-mode>` so that
       the binaries for all versions in-use can be pulled from |onprem|.
 
+   .. step:: Remove |k8s-statefulset| overrides for init containers, if any.
+    
+      There are no init containers used with the static container architecture.
+      If an override for an init container is present, the migration from non-static to static containers fails.
+
+      Remove any |k8s-statefulset| overrides for init containers from your 
+      :ref:`MongoDB resource specification <k8s-specification>` or 
+      :ref:`Ops Manager resource specification <k8s-om-specification>`. 
+      For example, ensure none of the following settings have been configured for ``initContainers``:
+
+      -  **Ops Manager:** :opsmgrkube:`spec.statefulSet.spec`
+      -  **Application Database**: :opsmgrkube:`spec.applicationDatabase.podSpec <spec.applicationDatabase>`
+      -  **Database:** :ref:`statefulset-settings`
+      -  **Multi-cluster:** :ref:`spec.statefulSet.spec <multi-spec-statefulset-spec>`
+
    .. step:: Set environment variables for the {+mdbagent+} image.
 
       .. tabs::