Re:Faster Builds with Container-Based Infrastructure and Docker
by aseidl on Wednesday December 17, 2014 @10:31PM
(#8765848)
Correct, the speedups are directly due to bundle caching (which previously had only been available for private/paid repos). Indirectly, I would assume this caching is now implemented via Docker's use of filesystem layers.
( as in http://docs.travis-ci.com/user/caching/ )