The same applies to the APM Server Docker image

It's also based on RHEL rather than Ubuntu.

Author: yetanothertw

solutions/observability/apm/apm-server-binary.md

@@ -844,7 +844,7 @@ To add the apm-server repository for YUM:
 
 ## Run APM Server on Docker [apm-running-on-docker]
 
-Docker images for APM Server are available from the Elastic Docker registry. The base image is [ubuntu:22.04](https://hub.docker.com/_/ubuntu).
+Docker images for APM Server are available from the Elastic Docker registry. The base image is Red Hat Universal Base Images (UBI) or Wolfi.
 
 A list of all published Docker images and tags is available at [www.docker.elastic.co](https://www.docker.elastic.co).