Base Ruby 1.8.7p352 container for octohost.
To use an already built container:
docker pull octohost/ruby-1.8.7p352
Or you can build it from this source:
docker build -t your-organization/ruby-1.8.7p352
NOTE: You can always get the most current ruby 1.8 container this way:
docker pull octohost/ruby-1.8