As the Synology DSM uses Docker to run GitLab, we can use Docker as well to install GitLab Runner. For this, connect to the Synology using SSH:

ssh <admin-user>@<synology> -p <port>

To connect to the GitLab container, you can use the following command to open:

docker exec -it synology_gitlab /bin/bash

You might adjust the name of the GitLab docker depending on your system.

To open the console, run:

gitlab-rails console

When GItLab is installed using the DSM package manager, just use the following commands:

cd /home/git/gitlab/bin
./rails console production

Commands for the console

Below are some examples how to use the GitLab console.

Check the mail delivery method

ActionMailer::Base.delivery_method

Output might be: => :smtp

Check the smtp settings

ActionMailer::Base.smtp_settings

Output might be: => {:address=>"example.com", :port=>25, …

Testing the SMTP configuration (see documentation)

Notify.test_email('mail@example.com', 'Subject', 'Mail Body').deliver_now