Merge pull request #51548 from sounix000/4449-buildah-pipeline-sa

RHDEVDOCS-4449 Buildah works only with pipeline SA

Author: JStickler

modules/op-about-pipelines.adoc

@@ -97,3 +97,8 @@ spec: <4>
 <8> Task `build-image`, which uses the `buildah` ClusterTask to build application images from a given Git repository.
 <9> Task `apply-manifests`, which uses a user-defined Task with the same name.
 <10> Specifies the sequence in which Tasks are run in a Pipeline. In this example, the `apply-manifests` Task is run only after the `build-image` Task is completed.
+
+[NOTE]
+====
+The {pipelines-title} Operator installs the Buildah cluster task and creates the `pipeline` service account with sufficient permission to build and push an image. The Buildah cluster task can fail when associated with a different service account with insufficient permissions.
+====