Imports github.com/pkg/errors github.com/opencontainers/runtime-spec/specs-go github.com/Sirupsen/logrus github.com/opencontainers/image-spec/schema github.com/opencontainers/image-spec/specs-go/v1 Standard library imports bufio bytes encoding/json fmt io io/ioutil log net/http os path/filepath strconv compress/bzip2 archive/zip archive/tar compress/gzip strings sync time