Remove support for referencing images by 'repository:shortid'

The `repository:shortid` syntax for referencing images is very little used,
collides with with tag references can be confused with digest references.

The `repository:shortid` notation was deprecated in Docker 1.13 through
5fc71599a0b77189f0fedf629ed43c7f7067956c, and scheduled for removal
in Docker 17.12.

This patch removes the support for this notation.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

daemon/image.go

@@ -6,7 +6,6 @@ import (
 
 	"github.com/docker/distribution/reference"
 	"github.com/docker/docker/image"
-	"github.com/docker/docker/pkg/stringid"
 )
 
 // errImageDoesNotExist is error returned when no image can be found for a reference.
@@ -59,21 +58,6 @@ func (daemon *Daemon) GetImageIDAndOS(refOrID string) (image.ID, string, error)
 		return id, imageOS, nil
 	}
 
-	// deprecated: repo:shortid https://github.com/docker/docker/pull/799
-	if tagged, ok := namedRef.(reference.Tagged); ok {
-		if tag := tagged.Tag(); stringid.IsShortID(stringid.TruncateID(tag)) {
-			for platform := range daemon.stores {
-				if id, err := daemon.stores[platform].imageStore.Search(tag); err == nil {
-					for _, storeRef := range daemon.referenceStore.References(id.Digest()) {
-						if storeRef.Name() == namedRef.Name() {
-							return id, platform, nil
-						}
-					}
-				}
-			}
-		}
-	}
-
 	// Search based on ID
 	for os := range daemon.stores {
 		if id, err := daemon.stores[os].imageStore.Search(refOrID); err == nil {

integration-cli/docker_cli_create_test.go

@@ -268,7 +268,6 @@ func (s *DockerSuite) TestCreateByImageID(c *check.C) {
 
 	dockerCmd(c, "create", imageID)
 	dockerCmd(c, "create", truncatedImageID)
-	dockerCmd(c, "create", fmt.Sprintf("%s:%s", imageName, truncatedImageID))
 
 	// Ensure this fails
 	out, exit, _ := dockerCmdWithError("create", fmt.Sprintf("%s:%s", imageName, imageID))
@@ -280,7 +279,10 @@ func (s *DockerSuite) TestCreateByImageID(c *check.C) {
 		c.Fatalf(`Expected %q in output; got: %s`, expected, out)
 	}
 
-	out, exit, _ = dockerCmdWithError("create", fmt.Sprintf("%s:%s", "wrongimage", truncatedImageID))
+	if i := strings.IndexRune(imageID, ':'); i >= 0 {
+		imageID = imageID[i+1:]
+	}
+	out, exit, _ = dockerCmdWithError("create", fmt.Sprintf("%s:%s", "wrongimage", imageID))
 	if exit == 0 {
 		c.Fatalf("expected non-zero exit code; received %d", exit)
 	}

integration-cli/docker_cli_tag_test.go

@@ -1,13 +1,10 @@
 package main
 
 import (
-	"fmt"
 	"strings"
 
 	"github.com/docker/docker/integration-cli/checker"
-	"github.com/docker/docker/integration-cli/cli/build"
 	"github.com/docker/docker/internal/testutil"
-	"github.com/docker/docker/pkg/stringid"
 	"github.com/go-check/check"
 )
 
@@ -140,29 +137,3 @@ func (s *DockerSuite) TestTagInvalidRepoName(c *check.C) {
 		c.Fatal("tagging with image named \"sha256\" should have failed")
 	}
 }
-
-// ensure tags cannot create ambiguity with image ids
-func (s *DockerSuite) TestTagTruncationAmbiguity(c *check.C) {
-	buildImageSuccessfully(c, "notbusybox:latest", build.WithDockerfile(`FROM busybox
-		MAINTAINER dockerio`))
-	imageID := getIDByName(c, "notbusybox:latest")
-	truncatedImageID := stringid.TruncateID(imageID)
-	truncatedTag := fmt.Sprintf("notbusybox:%s", truncatedImageID)
-
-	id := inspectField(c, truncatedTag, "Id")
-
-	// Ensure inspect by image id returns image for image id
-	c.Assert(id, checker.Equals, imageID)
-	c.Logf("Built image: %s", imageID)
-
-	// test setting tag fails
-	_, _, err := dockerCmdWithError("tag", "busybox:latest", truncatedTag)
-	if err != nil {
-		c.Fatalf("Error tagging with an image id: %s", err)
-	}
-
-	id = inspectField(c, truncatedTag, "Id")
-
-	// Ensure id is imageID and not busybox:latest
-	c.Assert(id, checker.Not(checker.Equals), imageID)
-}