Remove redundant stubs from container image tag specs
Remove redundant stubs from container image tag specs

iiet/iiet-git,darkrasid/gitlabhq,dplarson/gitlabhq,jirutka/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,axilleas/gitlabhq,axilleas/gitlabhq,t-zuehlsdorff/gitlabhq,t-zuehlsdorff/gitlabhq,mmkassem/gitlabhq,jirutka/gitlabhq,darkrasid/gitlabhq,htve/GitlabForChinese,jirutka/gitlabhq,dplarson/gitlabhq,darkrasid/gitlabhq,iiet/iiet-git,t-zuehlsdorff/gitlabhq,axilleas/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git,jirutka/gitlabhq,darkrasid/gitlabhq,dreampet/gitlab,dreampet/gitlab,iiet/iiet-git,stoplightio/gitlabhq,dplarson/gitlabhq,t-zuehlsdorff/gitlabhq,dreampet/gitlab,htve/GitlabForChinese,axilleas/gitlabhq,dplarson/gitlabhq,dreampet/gitlab,htve/GitlabForChinese,htve/GitlabForChinese,stoplightio/gitlabhq,mmkassem/gitlabhq