readme: create SSL certificate that will remain valid for 10 years
readme: create SSL certificate that will remain valid for 10 years

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