How to set the logback.xml dynamically in OCP env?

Issue

I am trying to follow the guide to setup camel on SB in OCP env: https://access.redhat.com/documentation/en-us/red_hat_fuse/7.12/html-single/fuse_on_openshift_guide/index#integrate-spring-boot-with-kubernetes and wants to change the logback.xml dynamically, suppose a configmap should be the choice.

I found the logback.xml is included in the deployment jar, not a separate file in the classpath.
In this situation, how to achieve the requirement?