In project root folder: docker build -t gitlab.inc -f gitlab.docker .
docker run -p ${your_http_port}:8080 gitlab.inc
You may be want to specify ports for SSH and/or HTTPS (not configured).
To do this just add -p ${your_ssh_port}:22 and/or -p ${your_https_port}:443 to run command
docker start ${container_id}
On some OS run command may be need --privileged flag, or it will fail (in particular, on macOS 10.13.3 (17D102)).
Launch your browser and go to http://127.0.0.1:${your_http_port}
WTFPL