CI: Reduce pointless expenditures
CI: Reduce pointless expenditures

* Use busybox for "deployable" to make as short as possible
* Do not run PyPI tests on docs/ branches

poldracklab/fmriprep,oesteban/fmriprep,poldracklab/preprocessing-workflow,oesteban/fmriprep,poldracklab/fmriprep,poldracklab/fmriprep,oesteban/preprocessing-workflow,oesteban/preprocessing-workflow,poldracklab/preprocessing-workflow,oesteban/fmriprep