Fix a bug in new ENV vars.
Fix a bug in new ENV vars.

bgruening/docker-galaxy-stable,afgane/docker-galaxy-stable,shiltemann/docker-galaxy-stable,bgruening/docker-galaxy-stable,shiltemann/docker-galaxy-stable,kellrott/docker-galaxy-stable,afgane/docker-galaxy-stable,shiltemann/docker-galaxy-stable,afgane/docker-galaxy-stable,chambm/docker-galaxy-stable,kellrott/docker-galaxy-stable,chambm/docker-galaxy-stable,bgruening/docker-galaxy-stable,kellrott/docker-galaxy-stable,chambm/docker-galaxy-stable