Commands to change user password
Adding some commands on how to change a password in the rails console. It's good to have when the admin user locks himself out of the instance and can not reset the password. There is another way to do this:
gitlab-rails console production
user = User.find_by(email: 'emil_id')
user.password = 'secret_pass' //at least 8 characters long
user.password_confirmation = 'secret_pass'
user.save!
But I like the solution that I am submitting better.