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