Add a Ruby 2.6 image for www-gitlab-com
This will be needed by Middleman 5. See https://github.com/middleman/middleman/pull/2276.
(I also need it in gitlab-com/www-gitlab-com!17640 (closed)!)
Edited by Sean McGivern
This will be needed by Middleman 5. See https://github.com/middleman/middleman/pull/2276.
(I also need it in gitlab-com/www-gitlab-com!17640 (closed)!)