Workspace in jenkins ui

### What feature do you want to see added?

I know that this problem is already known but it is still important in my opinion. As described in #583 the feature _Remote FS Root Mapping_ make no sense - i agree with you! **But** if you remove a feature, you should provide a good alternative to avoid breaking changes. Sure, there are a handful workarounds to visualize the workspace in the jenkins ui but all of these are too complex. I'm not so familiar with the jenkins api but i think there is a way to use a workspace from the jenkins controller filesystem which comes as mount from a docker jenkins agent. So, is this possible to develop and integrate this feature to the docker-plugin?

### Upstream changes

_No response_