I have tested that I can create the image from the attached docker file on both my mac, and on the command line on the Ubuntu server hosting Jenkins. I deduce that the problem is caused by the plugin.

The error is:

```

[91mterminate called after throwing an instance of 'ghc::filesystem::filesystem_error'
what(): Directory not empty: '/tmp/mambadl8A4aZ'
The command '/bin/bash -c mamba create -y --name sphinx sphinx pydata-sphinx-theme dask-sphinx-theme sphinx_rtd_theme astropy-sphinx-theme sphinx-book-theme sphinx-material sphinx-tabs sphinxcontrib-programoutput jupyter_sphinx sphinx-nbexamples sphinx-tabs sphinx-argparse' returned a non-zero code: 139

```