diff --git a/docs/registry.go b/docs/registry.go
index 8900f2755..7254b49ef 100644
--- a/docs/registry.go
+++ b/docs/registry.go
@@ -1,6 +1,7 @@
 package registry
 
 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"github.com/dotcloud/docker/auth"
@@ -288,322 +289,200 @@ func (r *Registry) GetRepositoryData(remote string) (*RepositoryData, error) {
 	}, nil
 }
 
-// // Push a local image to the registry
-// func (r *Registry) PushImage(stdout io.Writer, img *Image, registry string, token []string) error {
-// 	registry = "https://" + registry + "/v1"
+// Push a local image to the registry
+func (r *Registry) PushImage(imgData *ImgData, jsonRaw []byte, layer io.Reader, registry string, token []string) error {
+	registry = "https://" + registry + "/v1"
 
-// 	client := graph.getHttpClient()
-// 	jsonRaw, err := ioutil.ReadFile(path.Join(graph.Root, img.Id, "json"))
-// 	if err != nil {
-// 		return fmt.Errorf("Error while retreiving the path for {%s}: %s", img.Id, err)
-// 	}
+	client := r.getHttpClient()
 
-// 	fmt.Fprintf(stdout, "Pushing %s metadata\r\n", img.Id)
+	// FIXME: try json with UTF8
+	req, err := http.NewRequest("PUT", registry+"/images/"+imgData.Id+"/json", strings.NewReader(string(jsonRaw)))
+	if err != nil {
+		return err
+	}
+	req.Header.Add("Content-type", "application/json")
+	req.Header.Set("Authorization", "Token "+strings.Join(token, ","))
 
-// 	// FIXME: try json with UTF8
-// 	jsonData := strings.NewReader(string(jsonRaw))
-// 	req, err := http.NewRequest("PUT", registry+"/images/"+img.Id+"/json", jsonData)
-// 	if err != nil {
-// 		return err
-// 	}
-// 	req.Header.Add("Content-type", "application/json")
-// 	req.Header.Set("Authorization", "Token "+strings.Join(token, ","))
+	req.Header.Set("X-Docker-Checksum", imgData.Checksum)
+	utils.Debugf("Setting checksum for %s: %s", imgData.Id, imgData.Checksum)
+	res, err := doWithCookies(client, req)
+	if err != nil {
+		return fmt.Errorf("Failed to upload metadata: %s", err)
+	}
+	defer res.Body.Close()
+	if len(res.Cookies()) > 0 {
+		client.Jar.SetCookies(req.URL, res.Cookies())
+	}
+	if res.StatusCode != 200 {
+		errBody, err := ioutil.ReadAll(res.Body)
+		if err != nil {
+			return fmt.Errorf("HTTP code %d while uploading metadata and error when"+
+				" trying to parse response body: %v", res.StatusCode, err)
+		}
+		var jsonBody map[string]string
+		if err := json.Unmarshal(errBody, &jsonBody); err != nil {
+			errBody = []byte(err.Error())
+		} else if jsonBody["error"] == "Image already exists" {
+			utils.Debugf("Image %s already uploaded ; skipping\n", imgData.Id)
+			return nil
+		}
+		return fmt.Errorf("HTTP code %d while uploading metadata: %s", res.StatusCode, errBody)
+	}
 
-// 	checksum, err := img.Checksum()
-// 	if err != nil {
-// 		return fmt.Errorf("Error while retrieving checksum for %s: %v", img.Id, err)
-// 	}
-// 	req.Header.Set("X-Docker-Checksum", checksum)
-// 	utils.Debugf("Setting checksum for %s: %s", img.ShortId(), checksum)
-// 	res, err := doWithCookies(client, req)
-// 	if err != nil {
-// 		return fmt.Errorf("Failed to upload metadata: %s", err)
-// 	}
-// 	defer res.Body.Close()
-// 	if len(res.Cookies()) > 0 {
-// 		client.Jar.SetCookies(req.URL, res.Cookies())
-// 	}
-// 	if res.StatusCode != 200 {
-// 		errBody, err := ioutil.ReadAll(res.Body)
-// 		if err != nil {
-// 			return fmt.Errorf("HTTP code %d while uploading metadata and error when"+
-// 				" trying to parse response body: %v", res.StatusCode, err)
-// 		}
-// 		var jsonBody map[string]string
-// 		if err := json.Unmarshal(errBody, &jsonBody); err != nil {
-// 			errBody = []byte(err.Error())
-// 		} else if jsonBody["error"] == "Image already exists" {
-// 			fmt.Fprintf(stdout, "Image %v already uploaded ; skipping\n", img.Id)
-// 			return nil
-// 		}
-// 		return fmt.Errorf("HTTP code %d while uploading metadata: %s", res.StatusCode, errBody)
-// 	}
+	req3, err := http.NewRequest("PUT", registry+"/images/"+imgData.Id+"/layer", layer)
+	if err != nil {
+		return err
+	}
 
-// 	fmt.Fprintf(stdout, "Pushing %s fs layer\r\n", img.Id)
-// 	root, err := img.root()
-// 	if err != nil {
-// 		return err
-// 	}
+	req3.ContentLength = -1
+	req3.TransferEncoding = []string{"chunked"}
+	req3.Header.Set("Authorization", "Token "+strings.Join(token, ","))
+	res3, err := doWithCookies(client, req3)
+	if err != nil {
+		return fmt.Errorf("Failed to upload layer: %s", err)
+	}
+	defer res3.Body.Close()
 
-// 	var layerData *TempArchive
-// 	// If the archive exists, use it
-// 	file, err := os.Open(layerArchivePath(root))
-// 	if err != nil {
-// 		if os.IsNotExist(err) {
-// 			// If the archive does not exist, create one from the layer
-// 			layerData, err = graph.TempLayerArchive(img.Id, Xz, stdout)
-// 			if err != nil {
-// 				return fmt.Errorf("Failed to generate layer archive: %s", err)
-// 			}
-// 		} else {
-// 			return err
-// 		}
-// 	} else {
-// 		defer file.Close()
-// 		st, err := file.Stat()
-// 		if err != nil {
-// 			return err
-// 		}
-// 		layerData = &TempArchive{file, st.Size()}
-// 	}
+	if res3.StatusCode != 200 {
+		errBody, err := ioutil.ReadAll(res3.Body)
+		if err != nil {
+			return fmt.Errorf("HTTP code %d while uploading metadata and error when"+
+				" trying to parse response body: %v", res.StatusCode, err)
+		}
+		return fmt.Errorf("Received HTTP code %d while uploading layer: %s", res3.StatusCode, errBody)
+	}
+	return nil
+}
 
-// 	req3, err := http.NewRequest("PUT", registry+"/images/"+img.Id+"/layer", utils.ProgressReader(layerData, int(layerData.Size), stdout, ""))
-// 	if err != nil {
-// 		return err
-// 	}
+// push a tag on the registry.
+// Remote has the format '<user>/<repo>
+func (r *Registry) pushTag(remote, revision, tag, registry string, token []string) error {
+	// "jsonify" the string
+	revision = "\"" + revision + "\""
+	registry = "https://" + registry + "/v1"
 
-// 	req3.ContentLength = -1
-// 	req3.TransferEncoding = []string{"chunked"}
-// 	req3.Header.Set("Authorization", "Token "+strings.Join(token, ","))
-// 	res3, err := doWithCookies(client, req3)
-// 	if err != nil {
-// 		return fmt.Errorf("Failed to upload layer: %s", err)
-// 	}
-// 	defer res3.Body.Close()
+	utils.Debugf("Pushing tags for rev [%s] on {%s}\n", revision, registry+"/users/"+remote+"/"+tag)
 
-// 	if res3.StatusCode != 200 {
-// 		errBody, err := ioutil.ReadAll(res3.Body)
-// 		if err != nil {
-// 			return fmt.Errorf("HTTP code %d while uploading metadata and error when"+
-// 				" trying to parse response body: %v", res.StatusCode, err)
-// 		}
-// 		return fmt.Errorf("Received HTTP code %d while uploading layer: %s", res3.StatusCode, errBody)
-// 	}
-// 	return nil
-// }
+	client := r.getHttpClient()
+	req, err := http.NewRequest("PUT", registry+"/repositories/"+remote+"/tags/"+tag, strings.NewReader(revision))
+	if err != nil {
+		return err
+	}
+	req.Header.Add("Content-type", "application/json")
+	req.Header.Set("Authorization", "Token "+strings.Join(token, ","))
+	req.ContentLength = int64(len(revision))
+	res, err := doWithCookies(client, req)
+	if err != nil {
+		return err
+	}
+	res.Body.Close()
+	if res.StatusCode != 200 && res.StatusCode != 201 {
+		return fmt.Errorf("Internal server error: %d trying to push tag %s on %s", res.StatusCode, tag, remote)
+	}
+	return nil
+}
 
-// // push a tag on the registry.
-// // Remote has the format '<user>/<repo>
-// func (r *Registry) pushTag(remote, revision, tag, registry string, token []string) error {
-// 	// "jsonify" the string
-// 	revision = "\"" + revision + "\""
-// 	registry = "https://" + registry + "/v1"
+// FIXME: this should really be PushTag
+func (r *Registry) PushLayer(remote, tag, imgId, registry string, token []string) error {
+	// Check if the local impage exists
+	img, err := graph.Get(imgId)
+	if err != nil {
+		fmt.Fprintf(stdout, "Skipping tag %s:%s: %s does not exist\r\n", remote, tag, imgId)
+		return nil
+	}
+	fmt.Fprintf(stdout, "Pushing image %s:%s\r\n", remote, tag)
+	// Push the image
+	if err = graph.PushImage(stdout, img, registry, token); err != nil {
+		return err
+	}
+	fmt.Fprintf(stdout, "Registering tag %s:%s\r\n", remote, tag)
+	// And then the tag
+	if err = graph.pushTag(remote, imgId, tag, registry, token); err != nil {
+		return err
+	}
+	return nil
+}
 
-// 	utils.Debugf("Pushing tags for rev [%s] on {%s}\n", revision, registry+"/users/"+remote+"/"+tag)
+func (r *Registry) PushJsonIndex(remote string, imgList []*ImgData, validate bool) (*RepositoryData, error) {
+	client := r.getHttpClient()
 
-// 	client := graph.getHttpClient()
-// 	req, err := http.NewRequest("PUT", registry+"/repositories/"+remote+"/tags/"+tag, strings.NewReader(revision))
-// 	if err != nil {
-// 		return err
-// 	}
-// 	req.Header.Add("Content-type", "application/json")
-// 	req.Header.Set("Authorization", "Token "+strings.Join(token, ","))
-// 	req.ContentLength = int64(len(revision))
-// 	res, err := doWithCookies(client, req)
-// 	if err != nil {
-// 		return err
-// 	}
-// 	res.Body.Close()
-// 	if res.StatusCode != 200 && res.StatusCode != 201 {
-// 		return fmt.Errorf("Internal server error: %d trying to push tag %s on %s", res.StatusCode, tag, remote)
-// 	}
-// 	return nil
-// }
+	imgListJson, err := json.Marshal(imgList)
+	if err != nil {
+		return nil, err
+	}
 
-// // FIXME: this should really be PushTag
-// func (r *Registry) pushPrimitive(stdout io.Writer, remote, tag, imgId, registry string, token []string) error {
-// 	// Check if the local impage exists
-// 	img, err := graph.Get(imgId)
-// 	if err != nil {
-// 		fmt.Fprintf(stdout, "Skipping tag %s:%s: %s does not exist\r\n", remote, tag, imgId)
-// 		return nil
-// 	}
-// 	fmt.Fprintf(stdout, "Pushing image %s:%s\r\n", remote, tag)
-// 	// Push the image
-// 	if err = graph.PushImage(stdout, img, registry, token); err != nil {
-// 		return err
-// 	}
-// 	fmt.Fprintf(stdout, "Registering tag %s:%s\r\n", remote, tag)
-// 	// And then the tag
-// 	if err = graph.pushTag(remote, imgId, tag, registry, token); err != nil {
-// 		return err
-// 	}
-// 	return nil
-// }
+	utils.Debugf("json sent: %s\n", imgListJson)
 
-// // Retrieve the checksum of an image
-// // Priority:
-// // - Check on the stored checksums
-// // - Check if the archive exists, if it does not, ask the registry
-// // - If the archive does exists, process the checksum from it
-// // - If the archive does not exists and not found on registry, process checksum from layer
-// func (r *Registry) getChecksum(imageId string) (string, error) {
-// 	// FIXME: Use in-memory map instead of reading the file each time
-// 	if sums, err := graph.getStoredChecksums(); err != nil {
-// 		return "", err
-// 	} else if checksum, exists := sums[imageId]; exists {
-// 		return checksum, nil
-// 	}
+	req, err := http.NewRequest("PUT", auth.IndexServerAddress()+"/repositories/"+remote+"/", bytes.NewReader(imgListJson))
+	if err != nil {
+		return nil, err
+	}
+	req.SetBasicAuth(r.authConfig.Username, r.authConfig.Password)
+	req.ContentLength = int64(len(imgListJson))
+	req.Header.Set("X-Docker-Token", "true")
 
-// 	img, err := graph.Get(imageId)
-// 	if err != nil {
-// 		return "", err
-// 	}
+	res, err := client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer res.Body.Close()
 
-// 	if _, err := os.Stat(layerArchivePath(graph.imageRoot(imageId))); err != nil {
-// 		if os.IsNotExist(err) {
-// 			// TODO: Ask the registry for the checksum
-// 			//       As the archive is not there, it is supposed to come from a pull.
-// 		} else {
-// 			return "", err
-// 		}
-// 	}
+	// Redirect if necessary
+	for res.StatusCode >= 300 && res.StatusCode < 400 {
+		utils.Debugf("Redirected to %s\n", res.Header.Get("Location"))
+		req, err = http.NewRequest("PUT", res.Header.Get("Location"), bytes.NewReader(imgListJson))
+		if err != nil {
+			return nil, err
+		}
+		req.SetBasicAuth(r.authConfig.Username, r.authConfig.Password)
+		req.ContentLength = int64(len(imgListJson))
+		req.Header.Set("X-Docker-Token", "true")
 
-// 	checksum, err := img.Checksum()
-// 	if err != nil {
-// 		return "", err
-// 	}
-// 	return checksum, nil
-// }
+		res, err = client.Do(req)
+		if err != nil {
+			return nil, err
+		}
+		defer res.Body.Close()
+	}
 
-// // Push a repository to the registry.
-// // Remote has the format '<user>/<repo>
-// func (r *Registry) PushRepository(stdout io.Writer, remote string, localRepo Repository, authConfig *auth.AuthConfig) error {
-// 	client := graph.getHttpClient()
-// 	// FIXME: Do not reset the cookie each time? (need to reset it in case updating latest of a repo and repushing)
-// 	client.Jar = cookiejar.NewCookieJar()
-// 	var imgList []*ImgListJson
+	if res.StatusCode != 200 && res.StatusCode != 201 {
+		errBody, err := ioutil.ReadAll(res.Body)
+		if err != nil {
+			return nil, err
+		}
+		return nil, fmt.Errorf("Error: Status %d trying to push repository %s: %s", res.StatusCode, remote, errBody)
+	}
 
-// 	fmt.Fprintf(stdout, "Processing checksums\n")
-// 	imageSet := make(map[string]struct{})
+	var tokens []string
+	if res.Header.Get("X-Docker-Token") != "" {
+		tokens = res.Header["X-Docker-Token"]
+		utils.Debugf("Auth token: %v", tokens)
+	} else {
+		return nil, fmt.Errorf("Index response didn't contain an access token")
+	}
 
-// 	for tag, id := range localRepo {
-// 		img, err := graph.Get(id)
-// 		if err != nil {
-// 			return err
-// 		}
-// 		img.WalkHistory(func(img *Image) error {
-// 			if _, exists := imageSet[img.Id]; exists {
-// 				return nil
-// 			}
-// 			imageSet[img.Id] = struct{}{}
-// 			checksum, err := graph.getChecksum(img.Id)
-// 			if err != nil {
-// 				return err
-// 			}
-// 			imgList = append([]*ImgListJson{{
-// 				Id:       img.Id,
-// 				Checksum: checksum,
-// 				tag:      tag,
-// 			}}, imgList...)
-// 			return nil
-// 		})
-// 	}
+	var endpoints []string
+	if res.Header.Get("X-Docker-Endpoints") != "" {
+		endpoints = res.Header["X-Docker-Endpoints"]
+	} else {
+		return nil, fmt.Errorf("Index response didn't contain any endpoints")
+	}
 
-// 	imgListJson, err := json.Marshal(imgList)
-// 	if err != nil {
-// 		return err
-// 	}
+	if validate {
+		if res.StatusCode != 204 {
+			if errBody, err := ioutil.ReadAll(res.Body); err != nil {
+				return nil, err
+			} else {
+				return nil, fmt.Errorf("Error: Status %d trying to push checksums %s: %s", res.StatusCode, remote, errBody)
+			}
+		}
+	}
 
-// 	utils.Debugf("json sent: %s\n", imgListJson)
-
-// 	fmt.Fprintf(stdout, "Sending image list\n")
-// 	req, err := http.NewRequest("PUT", auth.IndexServerAddress()+"/repositories/"+remote+"/", bytes.NewReader(imgListJson))
-// 	if err != nil {
-// 		return err
-// 	}
-// 	req.SetBasicAuth(authConfig.Username, authConfig.Password)
-// 	req.ContentLength = int64(len(imgListJson))
-// 	req.Header.Set("X-Docker-Token", "true")
-
-// 	res, err := client.Do(req)
-// 	if err != nil {
-// 		return err
-// 	}
-// 	defer res.Body.Close()
-
-// 	for res.StatusCode >= 300 && res.StatusCode < 400 {
-// 		utils.Debugf("Redirected to %s\n", res.Header.Get("Location"))
-// 		req, err = http.NewRequest("PUT", res.Header.Get("Location"), bytes.NewReader(imgListJson))
-// 		if err != nil {
-// 			return err
-// 		}
-// 		req.SetBasicAuth(authConfig.Username, authConfig.Password)
-// 		req.ContentLength = int64(len(imgListJson))
-// 		req.Header.Set("X-Docker-Token", "true")
-
-// 		res, err = client.Do(req)
-// 		if err != nil {
-// 			return err
-// 		}
-// 		defer res.Body.Close()
-// 	}
-
-// 	if res.StatusCode != 200 && res.StatusCode != 201 {
-// 		errBody, err := ioutil.ReadAll(res.Body)
-// 		if err != nil {
-// 			return err
-// 		}
-// 		return fmt.Errorf("Error: Status %d trying to push repository %s: %s", res.StatusCode, remote, errBody)
-// 	}
-
-// 	var token, endpoints []string
-// 	if res.Header.Get("X-Docker-Token") != "" {
-// 		token = res.Header["X-Docker-Token"]
-// 		utils.Debugf("Auth token: %v", token)
-// 	} else {
-// 		return fmt.Errorf("Index response didn't contain an access token")
-// 	}
-// 	if res.Header.Get("X-Docker-Endpoints") != "" {
-// 		endpoints = res.Header["X-Docker-Endpoints"]
-// 	} else {
-// 		return fmt.Errorf("Index response didn't contain any endpoints")
-// 	}
-
-// 	// FIXME: Send only needed images
-// 	for _, registry := range endpoints {
-// 		fmt.Fprintf(stdout, "Pushing repository %s to %s (%d tags)\r\n", remote, registry, len(localRepo))
-// 		// For each image within the repo, push them
-// 		for _, elem := range imgList {
-// 			if err := graph.pushPrimitive(stdout, remote, elem.tag, elem.Id, registry, token); err != nil {
-// 				// FIXME: Continue on error?
-// 				return err
-// 			}
-// 		}
-// 	}
-
-// 	req2, err := http.NewRequest("PUT", auth.IndexServerAddress()+"/repositories/"+remote+"/images", bytes.NewReader(imgListJson))
-// 	if err != nil {
-// 		return err
-// 	}
-// 	req2.SetBasicAuth(authConfig.Username, authConfig.Password)
-// 	req2.Header["X-Docker-Endpoints"] = endpoints
-// 	req2.ContentLength = int64(len(imgListJson))
-// 	res2, err := client.Do(req2)
-// 	if err != nil {
-// 		return err
-// 	}
-// 	defer res2.Body.Close()
-// 	if res2.StatusCode != 204 {
-// 		if errBody, err := ioutil.ReadAll(res2.Body); err != nil {
-// 			return err
-// 		} else {
-// 			return fmt.Errorf("Error: Status %d trying to push checksums %s: %s", res2.StatusCode, remote, errBody)
-// 		}
-// 	}
-
-// 	return nil
-// }
+	return &RepositoryData{
+		Tokens:    tokens,
+		Endpoints: endpoints,
+	}, nil
+}
 
 func (r *Registry) SearchRepositories(stdout io.Writer, term string) (*SearchResults, error) {
 	client := r.getHttpClient()