Fixed QC display syntax for Docker users (#2589)
Fixed QC display syntax for Docker users (#2589)

* added a test for Docker user . If no Browser is set then there is a different message

* Added test to avoid crash in docker container. The script now check if environement variable are set before deleting them

* change varaible name after discussion and try catch result

* remove extra balnk line after conflict

* added reference to explain the variable

* Clarified comments about DOCKER variable

Co-authored-by: Julien Cohen-Adad <e578136a2021d4e9e3383343e8c8ad88a5146761@polymtl.ca>

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