airbnb/synapse — pull request #96 by bcicen (2014-10-17 22:14:48+00:00)
Title: Adding optional image_tag param to docker watcher  

To explicitly discover only containers running image_name:image_tag. I've found this to be quite valuable in the deploy cycle as I can bring up containers and move them to the tag defined in synapse config when I'm ready for them to be discovered. README updated to reflect.