Imports
- github.com/docker/distribution/context
- github.com/docker/distribution/registry/client/transport
- github.com/docker/distribution/registry/storage/driver
- github.com/docker/distribution/registry/storage/driver/factory
- github.com/docker/goamz/aws
- github.com/docker/distribution/registry/storage/driver/base
- github.com/docker/goamz/s3