Add gitlab-ci.yml documentation for environments
Add gitlab-ci.yml documentation for environments

shinexiao/gitlabhq,mr-dxdy/gitlabhq,iiet/iiet-git,screenpages/gitlabhq,axilleas/gitlabhq,screenpages/gitlabhq,stoplightio/gitlabhq,axilleas/gitlabhq,htve/GitlabForChinese,jirutka/gitlabhq,SVArago/gitlabhq,jirutka/gitlabhq,t-zuehlsdorff/gitlabhq,icedwater/gitlabhq,mr-dxdy/gitlabhq,mmkassem/gitlabhq,allysonbarros/gitlabhq,icedwater/gitlabhq,martijnvermaat/gitlabhq,openwide-java/gitlabhq,jirutka/gitlabhq,allysonbarros/gitlabhq,htve/GitlabForChinese,jirutka/gitlabhq,dplarson/gitlabhq,mr-dxdy/gitlabhq,axilleas/gitlabhq,martijnvermaat/gitlabhq,dreampet/gitlab,t-zuehlsdorff/gitlabhq,dreampet/gitlab,daiyu/gitlab-zh,daiyu/gitlab-zh,shinexiao/gitlabhq,stoplightio/gitlabhq,openwide-java/gitlabhq,darkrasid/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,martijnvermaat/gitlabhq,SVArago/gitlabhq,daiyu/gitlab-zh,Soullivaneuh/gitlabhq,mmkassem/gitlabhq,SVArago/gitlabhq,LUMC/gitlabhq,screenpages/gitlabhq,daiyu/gitlab-zh,LUMC/gitlabhq,Soullivaneuh/gitlabhq,openwide-java/gitlabhq,iiet/iiet-git,LUMC/gitlabhq,htve/GitlabForChinese,LUMC/gitlabhq,darkrasid/gitlabhq,dplarson/gitlabhq,allysonbarros/gitlabhq,shinexiao/gitlabhq,mr-dxdy/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,martijnvermaat/gitlabhq,Soullivaneuh/gitlabhq,iiet/iiet-git,dplarson/gitlabhq,Soullivaneuh/gitlabhq,openwide-java/gitlabhq,axilleas/gitlabhq,icedwater/gitlabhq,allysonbarros/gitlabhq,dreampet/gitlab,screenpages/gitlabhq,iiet/iiet-git,darkrasid/gitlabhq,SVArago/gitlabhq,darkrasid/gitlabhq,t-zuehlsdorff/gitlabhq,shinexiao/gitlabhq,icedwater/gitlabhq,htve/GitlabForChinese,dreampet/gitlab,dplarson/gitlabhq,t-zuehlsdorff/gitlabhq