Running GitLab in a Docker container on a different port

Gitlab by default runs on port 80. GitLab in a Docker container runs the same as a when natively installed, but to change the port you need to change the config, and change the exposed ports on the container.

First, per steps here, start the container with:

docker run --detach \	
  --hostname gitlab.example.com \	
  --publish host-https-port:container-https-port 
  --publish host-http-port:container-http-port 
  --publish 22:22 \	
  --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

By default host-http-port and container-http-port are 80, and host-https-port container-https-port are 443. Change these to be whatever port you want to run on, but keep each pair the same (e.g. host-http-port and container-http-port = 8090)

When the container is up, start a shell into the running container:

docker exec -it containerid sh

and then edit the config file:

vi /etc/gitlab/gitlab.rb

and add line (at the top is ok):

external_url 'http://localhost:your-new-port-here

setting your-new-port-here to the new port.

Reconfigure the server:

gitlab-ctl reconfigure

gitlab-ctl restart

Done!