fix position of --rm flag in docker build
fix position of --rm flag in docker build

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