The default `docker-compose.yml` file that ships with the SDK4, will enable debugging in Alfresco and exposes the debug port to your localhost.
Once you start Alfresco in docker (`run.sh start` or whatever you use), you are able to debug your code by attaching a remote debugger to e.g. localhost:8888
The port can be configured by following Maven property:
<acs.debug.port>8888</acs.debug.port>
