Imports github.com/Sirupsen/logrus github.com/docker/docker/pkg/system github.com/docker/docker/vendor/src/code.google.com/p/go/src/pkg/archive/tar github.com/docker/docker/pkg/promise github.com/docker/docker/pkg/fileutils github.com/docker/docker/pkg/pools Standard library imports bufio bytes errors fmt io io/ioutil os os/exec path path/filepath sort strings syscall time compress/bzip2 compress/gzip