Figure out which image needs to be used as base image for HA-CEP

Currently we use Alpine image in HA-CEP. It would be better to use some production ready image for this. The goal of this Jira is to figure out which image should be used and change the Dockerfile properly. This JIRA is follow up for https://issues.jboss.org/browse/BXMSPROD-498?focusedCommentId=13779366&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-13779366