RiotGames/artifact-cookbook — pull request #52 by KAllan357 (2013-02-04 19:09:52+00:00)
Title: Symlinks inside the release_path that link files outside the release_path should be skipped for manifest checking

If your artifact generates a log file (or anything that will change), even symlinking it to the shared directories won't stop your artifact from being redeployed every time.