Fixed script to abort if any command it uses reports an error.
Fixed script to abort if any command it uses reports an error.

digitalmethodsinitiative/dmi-tcat,digitalmethodsinitiative/dmi-tcat,digitalmethodsinitiative/dmi-tcat,brendam/dmi-tcat,ninthday/dmi-tcat,brendam/dmi-tcat,ninthday/dmi-tcat,brendam/dmi-tcat,ninthday/dmi-tcat,brendam/dmi-tcat,ninthday/dmi-tcat,digitalmethodsinitiative/dmi-tcat