root> apt-get install postfix bsd-mailx curl openssh-server ca-certificates

# CE Version
root> curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.deb.sh | bash
root> EXTERNAL_URL="https://vm8" apt-get install gitlab-ce
# evtl. 2 x laufen lassen

# EE Version
root> curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ee/script.deb.sh | bash
root> EXTERNAL_URL="https://vm8" apt-get install gitlab-ee

Browser → https://vm8
root passwort vergeben und unter Users einen neuen user anlegen