borisyankov/DefinitelyTyped — pull request #3113 by basarat (2014-11-10 05:17:40+00:00)
Title: Use the new beta build env on Travis

https://github.com/travis-ci/docs-travis-ci-com/blob/ha-docker-documentation/user/container-based-infrastructure.md

Seen on `Microsoft/TypeScript/pull/1085` by travis team

For review of @Bartvds / @vvakame incase something awful happens