Imports github.com/Sirupsen/logrus github.com/docker/docker/pkg/fileutils github.com/docker/docker/pkg/idtools github.com/docker/docker/pkg/ioutils github.com/docker/docker/pkg/pools github.com/docker/docker/pkg/promise github.com/docker/docker/pkg/system Standard library imports archive/tar bufio bytes compress/bzip2 compress/gzip errors fmt io io/ioutil os os/exec path/filepath runtime sort strings syscall time unsafe