apptainer run --cleanenv --bind ${MRIS}/data:/data:ro  --bind ${MRIS}/derivatives/fmriprep:/outputs --bind ${MRIS}/fmriprep_work:/work ${APP} /data /outputs participant --participant_label ${Subject} --fs-license-file ${HOME}/license.txt -w /work  --stop-on-first-crash --ignore slicetiming --cifti-output --output-spaces fsnative fsaverage MNI152NLin6Asym:res-2

This assumes license.txt is in my home directory.