The task can be broken down. We also need a testing status document to track changes.
Support of testing Jenkins plugins with Java 11 on CI
Plugin Compat Tester Docker image should not be using Module patches starting from 2.163
I believe we have completed the last iteration together with Baptiste Mathus
See https://docs.google.com/document/d/1oluVrNVpQhXCIwW9CYVm09Y1vPc3H77d3q92LrzcpDw/edit for the status