https://about.gitlab.com/downloads/#ubuntu1404
* apt-get install curl openssh-server ca-certificates postfix
* curl -LJO https://packages.gitlab.com/gitlab/gitlab-ce/packages/ubuntu/trusty/gitlab-ce_8.4.4-ce.0_amd64.deb/download
* dpkg -i gitlab-ce_8.4.4-ce.0_amd64.deb
* gitlab-ctl reconfigure