make: added `release` target
make: added `release` target

bboehmke/docker-gitlab-ci,youhong316/docker-gitlab-ci,adiferd/docker-gitlab-ci,bboehmke/docker-gitlab-ci,adiferd/docker-gitlab-ci,sameersbn/docker-gitlab-ci,youhong316/docker-gitlab-ci,sameersbn/docker-gitlab-ci