Make it clear which env vars are required
Make it clear which env vars are required

jboss-container-images/concreate,jboss-container-images/concreate,jboss-dockerfiles/dogen,goldmann/dogen,jboss-container-images/concreate,goldmann/dogen,jboss-dockerfiles/dogen,jboss-dockerfiles/dogen,goldmann/dogen