Add details for Wolfi install image (#1610)

* Add details for Wolfi install image

* Update docs/en/ingest-management/elastic-agent/elastic-agent-container.asciidoc

(cherry picked from commit 32fdb6a)

Author: kilfoyle

docs/en/ingest-management/elastic-agent/elastic-agent-container.asciidoc

@@ -36,7 +36,11 @@ Run the `docker pull` command against the Elastic Docker registry:
 docker pull docker.elastic.co/elastic-agent/elastic-agent:{version}
 ----
 
-Alternately, you can use the hardened link:https://wolfi.dev/[Wolfi] image. Using Wolfi images requires Docker version 20.10.10 or higher.
+Alternately, you can use the hardened link:https://wolfi.dev/[Wolfi] image.
+Using Wolfi images requires Docker version 20.10.10 or later.
+For details about why the Wolfi images have been introduced, refer to our article 
+link:https://www.elastic.co/blog/reducing-cves-in-elastic-container-images[Reducing CVEs in Elastic container images].
+
 
 [source,terminal,subs="attributes"]
 ----