OSDOCS-6898: add kernel override

Author: jldohmann

modules/coreos-layering-configuring.adoc

@@ -24,20 +24,22 @@ When you configure a custom layered image, {product-title} no longer automatical
 You should use the same base {op-system} image that is installed on the rest of your cluster. Use the `oc adm release info --image-for rhel-coreos` command to obtain the base image being used in your cluster.
 ====
 +
-For example, the following Containerfile creates a custom layered image from an {product-title} {product-version} image and a Hotfix package:
+For example, the following Containerfile creates a custom layered image from an {product-title} {product-version} image and overrides the kernel package with one from CentOS 9 Stream:
 +
 .Example Containerfile for a custom layer image
 [source,yaml]
 ----
 # Using a 4.12.0 image
 FROM quay.io/openshift-release/ocp-release@sha256... <1>
 #Install hotfix rpm
-RUN rpm-ostree override replace https://example.com/hotfixes/haproxy-1.0.16-5.el8.src.rpm && \ <2>
+RUN rpm-ostree override cliwrap install-to-root / && \ <2>
+    rpm-ostree override replace http://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os/Packages/kernel-{,core-,modules-,modules-core-,modules-extra-}5.14.0-295.el9.x86_64.rpm && \ <3>
     rpm-ostree cleanup -m && \
     ostree container commit
 ----
 <1> Specifies the {op-system} base image of your cluster.
-<2> Specifies the path to the Hotfix package.
+<2> Enables `cliwrap`. This is currently required to intercept some command invocations made from kernel scripts.
+<3> Replaces the kernel packages.
 +
 [NOTE]
 ====