Choose from the official ubuntu website.

Here : 16.04.1 Long Term Support (LTS)

Follow the guidelines from the official website

Use the pull command as described on the docker website

Remark : sudo should be used here as sudo https://hub.docker.com/r/gitlab/gitlab-ce/

Then, run gitlab from docker :

sudo docker run --detach \
    --hostname gitlab.example.com \
    --publish 10443:443 --publish 10080:80 --publish 10022:22 \
    --name gitlab \
    --restart always \
    --volume /srv/gitlab/config:/etc/gitlab \
    --volume /srv/gitlab/logs:/var/log/gitlab \
    --volume /srv/gitlab/data:/var/opt/gitlab \
    gitlab/gitlab-ce:latest

How to inspect which container is running ?

sudo docker ps

How to inspect existing containers :

docker ps -a

If you need to remove a container

docker rm drunk_fermi

or forcefully using,

docker rm -f drunk_fermi

Access the GitLab shell

sudo docker exec -it gitlab /bin/bash

Access directly the main config file

sudo docker exec -it gitlab /bin/bash