Shell safeties + comments.
Shell safeties + comments.

I tried to get docker to run the tests in a directory of the same name
as it was launched from, but it's impossible, so I'm leaving a note.

Also quote things that should be quoted. Shell is unforgiving.

neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox