Generally you shouldn't care where on the build machine the workspace is
created.
With Pipeline, a workspace directory is allocated automatically when you
use the `node` step. If you want to do work within a workspace on a
build slave, you need to make sure you're specifying that machine as an
argument to the `node` step.
If that doesn't help, it would be helpful to see a concrete example of
what your pipeline looks like and what you expect to see.
Regards,
Chris