Totalsegmentator also comes with Docker container, which can invoked for inferencing by e.g.:
docker run --gpus 'device=0' --ipc=host -v /absolute/path/to/my/data/directory:/tmp wasserth/totalsegmentator_container:master TotalSegmentator -i /tmp/ct.nii.gz -o /tmp/segmentations

Implement the support for this call as well in MITK TotalSegmentator tool.