Migrating to circleci 2.0 : Fixed docker image name
Migrating to circleci 2.0 : Fixed docker image name

marcelmay/greenmail,marcelmay/greenmail,greenmail-mail-test/greenmail,marcelmay/greenmail,marcelmay/greenmail,greenmail-mail-test/greenmail,greenmail-mail-test/greenmail,marcelmay/greenmail