@@ -31,7 +31,7 @@ func NewGraph(root string) (*Graph, error) {

 		return nil, err

 	}

 	// Create the root directory if it doesn't exists

-	if err := os.Mkdir(root, 0700); err != nil && !os.IsExist(err) {

+	if err := os.MkdirAll(root, 0700); err != nil && !os.IsExist(err) {

 		return nil, err

 	}

 	graph := &Graph{

@@ -303,16 +303,12 @@ func (img *Image) Checksum() (string, error) {

 		return "", err

 	}

-	fmt.Printf("precopy %s: %s\n", img.ShortId(), time.Now().String())

-

 	if _, err := io.Copy(h, layerData); err != nil {

 		return "", err

 	}

-	fmt.Printf("postcopy presum %s: %s\n", img.ShortId(), time.Now().String())

 	hash := "sha256:" + hex.EncodeToString(h.Sum(nil))

 	checksums[img.Id] = hash

-	fmt.Printf("postsum %s: %s\n", img.ShortId(), time.Now().String())

 	// Reload the json file to make sure not to overwrite faster sums

 	img.graph.lockSumFile.Lock()

@@ -194,18 +194,16 @@ func (graph *Graph) getRemoteTags(stdout io.Writer, registries []string, reposit

 			return nil, fmt.Errorf("Repository not found")

 		}

-		result := new(map[string]string)

+		result := make(map[string]string)

 		rawJson, err := ioutil.ReadAll(res.Body)

 		if err != nil {

 			return nil, err

 		}

-		if err = json.Unmarshal(rawJson, result); err != nil {

+		if err = json.Unmarshal(rawJson, &result); err != nil {

 			return nil, err

 		}

-

-		return *result, nil

-

+		return result, nil

 	}

 	return nil, fmt.Errorf("Could not reach any registry endpoint")

 }

@@ -308,6 +306,50 @@ func (graph *Graph) PullRepository(stdout io.Writer, remote, askedTag string, re

 		return fmt.Errorf("Index response didn't contain any endpoints")

 	}

+	checksumsJson, err := ioutil.ReadAll(res.Body)

+	if err != nil {

+		return err

+	}

+

+	// Reload the json file to make sure not to overwrite faster sums

+	err = func() error {

+		localChecksums := make(map[string]string)

+		remoteChecksums := []struct {

+			Id       string `json: "id"`

+			Checksum string `json: "checksum"`

+		}{}

+		checksumDictPth := path.Join(graph.Root, "..", "checksums")

+

+		if err := json.Unmarshal(checksumsJson, &remoteChecksums); err != nil {

+			return err

+		}

+

+		graph.lockSumFile.Lock()

+		defer graph.lockSumFile.Unlock()

+

+		if checksumDict, err := ioutil.ReadFile(checksumDictPth); err == nil {

+			if err := json.Unmarshal(checksumDict, &localChecksums); err != nil {

+				return err

+			}

+		}

+

+		for _, elem := range remoteChecksums {

+			localChecksums[elem.Id] = elem.Checksum

+		}

+

+		checksumsJson, err = json.Marshal(localChecksums)

+		if err != nil {

+			return err

+		}

+		if err := ioutil.WriteFile(checksumDictPth, checksumsJson, 0600); err != nil {

+			return err

+		}

+		return nil

+	}()

+	if err != nil {

+		return err

+	}

+

 	var tagsList map[string]string

 	if askedTag == "" {

 		tagsList, err = graph.getRemoteTags(stdout, endpoints, remote, token)