Imports
- github.com/docker/libtrust
- github.com/docker/distribution/storagedriver
- github.com/Sirupsen/logrus
- github.com/docker/docker/pkg/tarsum
- github.com/docker/distribution/manifest
- github.com/AdRoll/goamz/cloudfront
- code.google.com/p/go-uuid/uuid
- github.com/docker/distribution/digest