// CmdCommit creates a new image from a container's changes.
//
// Usage: docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]
func (cli *DockerCli) CmdCommit(args ...string) error {
	cmd := cli.Subcmd("commit", "CONTAINER [REPOSITORY[:TAG]]", "Create a new image from a container's changes", true)
	flPause := cmd.Bool([]string{"p", "-pause"}, true, "Pause container during commit")
	flComment := cmd.String([]string{"m", "-message"}, "", "Commit message")
	flAuthor := cmd.String([]string{"a", "#author", "-author"}, "", "Author (e.g., \"John Hannibal Smith <[email protected]>\")")
	flChanges := opts.NewListOpts(nil)
	cmd.Var(&flChanges, []string{"c", "-change"}, "Apply Dockerfile instruction to the created image")
	// FIXME: --run is deprecated, it will be replaced with inline Dockerfile commands.
	flConfig := cmd.String([]string{"#run", "#-run"}, "", "This option is deprecated and will be removed in a future version in favor of inline Dockerfile-compatible commands")
	cmd.Require(flag.Max, 2)
	cmd.Require(flag.Min, 1)
	utils.ParseFlags(cmd, args, true)

	var (
		name            = cmd.Arg(0)
		repository, tag = parsers.ParseRepositoryTag(cmd.Arg(1))
	)

	//Check if the given image name can be resolved
	if repository != "" {
		if err := registry.ValidateRepositoryName(repository); err != nil {
			return err
		}
	}

	v := url.Values{}
	v.Set("container", name)
	v.Set("repo", repository)
	v.Set("tag", tag)
	v.Set("comment", *flComment)
	v.Set("author", *flAuthor)
	for _, change := range flChanges.GetAll() {
		v.Add("changes", change)
	}

	if *flPause != true {
		v.Set("pause", "0")
	}

	var (
		config *runconfig.Config
		env    engine.Env
	)
	if *flConfig != "" {
		config = &runconfig.Config{}
		if err := json.Unmarshal([]byte(*flConfig), config); err != nil {
			return err
		}
	}
	stream, _, err := cli.call("POST", "/commit?"+v.Encode(), config, nil)
	if err != nil {
		return err
	}
	if err := env.Decode(stream); err != nil {
		return err
	}

	fmt.Fprintf(cli.out, "%s\n", env.Get("Id"))
	return nil
}

// CmdTag tags an image into a repository.
//
// Usage: docker tag [OPTIONS] IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]
func (cli *DockerCli) CmdTag(args ...string) error {
	cmd := cli.Subcmd("tag", "IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]", "Tag an image into a repository", true)
	force := cmd.Bool([]string{"f", "#force", "-force"}, false, "Force")
	cmd.Require(flag.Exact, 2)

	utils.ParseFlags(cmd, args, true)

	var (
		repository, tag = parsers.ParseRepositoryTag(cmd.Arg(1))
		v               = url.Values{}
	)

	//Check if the given image name can be resolved
	if err := registry.ValidateRepositoryName(repository); err != nil {
		return err
	}
	v.Set("repo", repository)
	v.Set("tag", tag)

	if *force {
		v.Set("force", "1")
	}

	if _, _, err := readBody(cli.call("POST", "/images/"+cmd.Arg(0)+"/tag?"+v.Encode(), nil, nil)); err != nil {
		return err
	}
	return nil
}

func (cli Docker) SendCmdPull(image string, imagePullConfig *graph.ImagePullConfig) ([]byte, int, error) {
	// We need to create a container via an image object.  If the image
	// is not stored locally, so we need to pull the image from the Docker HUB.

	// Get a Repository name and tag name from the argument, but be careful
	// with the Repository name with a port number.  For example:
	//      localdomain:5000/samba/hipache:latest
	repository, tag := parsers.ParseRepositoryTag(image)
	if err := registry.ValidateRepositoryName(repository); err != nil {
		return nil, -1, err
	}
	if len(tag) > 0 {
		if err := tags.ValidateTagName(tag); err != nil {
			return nil, -1, err
		}
	} else {
		tag = tags.DefaultTag
	}

	glog.V(3).Infof("The Repository is %s, and the tag is %s", repository, tag)
	glog.V(3).Info("pull the image from the repository!")
	err := cli.daemon.Repositories().Pull(repository, tag, imagePullConfig)
	if err != nil {
		return nil, -1, err
	}
	return nil, 200, nil
}

// sanitizeRepoAndTags parses the raw "t" parameter received from the client
// to a slice of repoAndTag.
// It also validates each repoName and tag.
func sanitizeRepoAndTags(names []string) ([]repoAndTag, error) {
	var (
		repoAndTags []repoAndTag
		// This map is used for deduplicating the "-t" paramter.
		uniqNames = make(map[string]struct{})
	)
	for _, repo := range names {
		name, tag := parsers.ParseRepositoryTag(repo)
		if name == "" {
			continue
		}

		if err := registry.ValidateRepositoryName(name); err != nil {
			return nil, err
		}

		nameWithTag := name
		if len(tag) > 0 {
			if err := tags.ValidateTagName(tag); err != nil {
				return nil, err
			}
			nameWithTag += ":" + tag
		} else {
			nameWithTag += ":" + tags.DefaultTag
		}
		if _, exists := uniqNames[nameWithTag]; !exists {
			uniqNames[nameWithTag] = struct{}{}
			repoAndTags = append(repoAndTags, repoAndTag{repo: name, tag: tag})
		}
	}
	return repoAndTags, nil
}

// CmdImport creates an empty filesystem image, imports the contents of the tarball into the image, and optionally tags the image.
//
// The URL argument is the address of a tarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz) file or a path to local file relative to docker client. If the URL is '-', then the tar file is read from STDIN.
//
// Usage: docker import [OPTIONS] file|URL|- [REPOSITORY[:TAG]]
func (cli *DockerCli) CmdImport(args ...string) error {
	cmd := Cli.Subcmd("import", []string{"file|URL|- [REPOSITORY[:TAG]]"}, Cli.DockerCommands["import"].Description, true)
	flChanges := opts.NewListOpts(nil)
	cmd.Var(&flChanges, []string{"c", "-change"}, "Apply Dockerfile instruction to the created image")
	message := cmd.String([]string{"m", "-message"}, "", "Set commit message for imported image")
	cmd.Require(flag.Min, 1)

	cmd.ParseFlags(args, true)

	var (
		v          = url.Values{}
		src        = cmd.Arg(0)
		repository = cmd.Arg(1)
	)

	v.Set("fromSrc", src)
	v.Set("repo", repository)
	v.Set("message", *message)
	for _, change := range flChanges.GetAll() {
		v.Add("changes", change)
	}
	if cmd.NArg() == 3 {
		fmt.Fprintf(cli.err, "[DEPRECATED] The format 'file|URL|- [REPOSITORY [TAG]]' has been deprecated. Please use file|URL|- [REPOSITORY[:TAG]]\n")
		v.Set("tag", cmd.Arg(2))
	}

	if repository != "" {
		//Check if the given image name can be resolved
		repo, _ := parsers.ParseRepositoryTag(repository)
		if err := registry.ValidateRepositoryName(repo); err != nil {
			return err
		}
	}

	var in io.Reader

	if src == "-" {
		in = cli.in
	} else if !urlutil.IsURL(src) {
		v.Set("fromSrc", "-")
		file, err := os.Open(src)
		if err != nil {
			return err
		}
		defer file.Close()
		in = file

	}

	sopts := &streamOpts{
		rawTerminal: true,
		in:          in,
		out:         cli.out,
	}

	_, err := cli.stream("POST", "/images/create?"+v.Encode(), sopts)
	return err
}

// validateTag checks if the given image name can be resolved.
func validateTag(rawRepo string) (string, error) {
	ref, err := reference.ParseNamed(rawRepo)
	if err != nil {
		return "", err
	}

	if err := registry.ValidateRepositoryName(ref); err != nil {
		return "", err
	}

	return rawRepo, nil
}

// validateTag checks if the given image name can be resolved.
func validateTag(rawRepo string) (string, error) {
	repository, tag := parsers.ParseRepositoryTag(rawRepo)
	if err := registry.ValidateRepositoryName(repository); err != nil {
		return "", err
	}

	if len(tag) == 0 {
		return rawRepo, nil
	}

	if err := tags.ValidateTagName(tag); err != nil {
		return "", err
	}

	return rawRepo, nil
}

// CmdImport creates an empty filesystem image, imports the contents of the tarball into the image, and optionally tags the image.
//
// The URL argument is the address of a tarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz) file. If the URL is '-', then the tar file is read from STDIN.
//
// Usage: docker import [OPTIONS] URL [REPOSITORY[:TAG]]
func (cli *DockerCli) CmdImport(args ...string) error {
	cmd := cli.Subcmd("import", "URL|- [REPOSITORY[:TAG]]", "Create an empty filesystem image and import the contents of the\ntarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz) into it, then\noptionally tag it.", true)
	flChanges := opts.NewListOpts(nil)
	cmd.Var(&flChanges, []string{"c", "-change"}, "Apply Dockerfile instruction to the created image")
	cmd.Require(flag.Min, 1)

	cmd.ParseFlags(args, true)

	var (
		v          = url.Values{}
		src        = cmd.Arg(0)
		repository = cmd.Arg(1)
	)

	v.Set("fromSrc", src)
	v.Set("repo", repository)
	for _, change := range flChanges.GetAll() {
		v.Add("changes", change)
	}
	if cmd.NArg() == 3 {
		fmt.Fprintf(cli.err, "[DEPRECATED] The format 'URL|- [REPOSITORY [TAG]]' has been deprecated. Please use URL|- [REPOSITORY[:TAG]]\n")
		v.Set("tag", cmd.Arg(2))
	}

	if repository != "" {
		//Check if the given image name can be resolved
		repo, _ := parsers.ParseRepositoryTag(repository)
		if err := registry.ValidateRepositoryName(repo); err != nil {
			return err
		}
	}

	var in io.Reader

	if src == "-" {
		in = cli.in
	}

	sopts := &streamOpts{
		rawTerminal: true,
		in:          in,
		out:         cli.out,
	}

	return cli.stream("POST", "/images/create?"+v.Encode(), sopts)
}

// CmdTag tags an image into a repository.
//
// Usage: docker tag [OPTIONS] IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]
func (cli *DockerCli) CmdTag(args ...string) error {
	cmd := Cli.Subcmd("tag", []string{"IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]"}, Cli.DockerCommands["tag"].Description, true)
	force := cmd.Bool([]string{"f", "-force"}, false, "Force the tagging even if there's a conflict")
	cmd.Require(flag.Exact, 2)

	cmd.ParseFlags(args, true)

	v := url.Values{}
	ref, err := reference.ParseNamed(cmd.Arg(1))
	if err != nil {
		return err
	}

	_, isDigested := ref.(reference.Digested)
	if isDigested {
		return errors.New("refusing to create a tag with a digest reference")
	}

	tag := ""
	tagged, isTagged := ref.(reference.Tagged)
	if isTagged {
		tag = tagged.Tag()
	}

	//Check if the given image name can be resolved
	if err := registry.ValidateRepositoryName(ref); err != nil {
		return err
	}
	v.Set("repo", ref.Name())
	v.Set("tag", tag)

	if *force {
		v.Set("force", "1")
	}

	if _, _, err := readBody(cli.call("POST", "/images/"+cmd.Arg(0)+"/tag?"+v.Encode(), nil, nil)); err != nil {
		return err
	}
	return nil
}

// CmdTag tags an image into a repository.
//
// Usage: docker tag [OPTIONS] IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]
func (cli *DockerCli) CmdTag(args ...string) error {
	cmd := Cli.Subcmd("tag", []string{"IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]"}, Cli.DockerCommands["tag"].Description, true)
	force := cmd.Bool([]string{"#f", "#-force"}, false, "Force the tagging even if there's a conflict")
	cmd.Require(flag.Exact, 2)

	cmd.ParseFlags(args, true)

	ref, err := reference.ParseNamed(cmd.Arg(1))
	if err != nil {
		return err
	}

	_, isDigested := ref.(reference.Digested)
	if isDigested {
		return errors.New("refusing to create a tag with a digest reference")
	}

	tag := ""
	tagged, isTagged := ref.(reference.Tagged)
	if isTagged {
		tag = tagged.Tag()
	}

	//Check if the given image name can be resolved
	if err := registry.ValidateRepositoryName(ref); err != nil {
		return err
	}

	options := types.ImageTagOptions{
		ImageID:        cmd.Arg(0),
		RepositoryName: ref.Name(),
		Tag:            tag,
		Force:          *force,
	}

	return cli.client.ImageTag(options)
}

// Build is the main interface of the package, it gathers the Builder
// struct and calls builder.Run() to do all the real build job.
func Build(d *daemon.Daemon, buildConfig *Config) error {
	var (
		repoName string
		tag      string
		context  io.ReadCloser
	)
	sf := streamformatter.NewJSONStreamFormatter()

	repoName, tag = parsers.ParseRepositoryTag(buildConfig.RepoName)
	if repoName != "" {
		if err := registry.ValidateRepositoryName(repoName); err != nil {
			return err
		}
		if len(tag) > 0 {
			if err := tags.ValidateTagName(tag); err != nil {
				return err
			}
		}
	}

	if buildConfig.RemoteURL == "" {
		context = ioutil.NopCloser(buildConfig.Context)
	} else if urlutil.IsGitURL(buildConfig.RemoteURL) {
		root, err := utils.GitClone(buildConfig.RemoteURL)
		if err != nil {
			return err
		}
		defer os.RemoveAll(root)

		c, err := archive.Tar(root, archive.Uncompressed)
		if err != nil {
			return err
		}
		context = c
	} else if urlutil.IsURL(buildConfig.RemoteURL) {
		f, err := httputils.Download(buildConfig.RemoteURL)
		if err != nil {
			return fmt.Errorf("Error downloading remote context %s: %v", buildConfig.RemoteURL, err)
		}
		defer f.Body.Close()
		ct := f.Header.Get("Content-Type")
		clen := int(f.ContentLength)
		contentType, bodyReader, err := inspectResponse(ct, f.Body, clen)

		defer bodyReader.Close()

		if err != nil {
			return fmt.Errorf("Error detecting content type for remote %s: %v", buildConfig.RemoteURL, err)
		}
		if contentType == httputils.MimeTypes.TextPlain {
			dockerFile, err := ioutil.ReadAll(bodyReader)
			if err != nil {
				return err
			}

			// When we're downloading just a Dockerfile put it in
			// the default name - don't allow the client to move/specify it
			buildConfig.DockerfileName = api.DefaultDockerfileName

			c, err := archive.Generate(buildConfig.DockerfileName, string(dockerFile))
			if err != nil {
				return err
			}
			context = c
		} else {
			// Pass through - this is a pre-packaged context, presumably
			// with a Dockerfile with the right name inside it.
			prCfg := progressreader.Config{
				In:        bodyReader,
				Out:       buildConfig.Stdout,
				Formatter: sf,
				Size:      clen,
				NewLines:  true,
				ID:        "Downloading context",
				Action:    buildConfig.RemoteURL,
			}
			context = progressreader.New(prCfg)
		}
	}

	defer context.Close()

	builder := &builder{
		Daemon: d,
		OutStream: &streamformatter.StdoutFormater{
			Writer:          buildConfig.Stdout,
			StreamFormatter: sf,
		},
		ErrStream: &streamformatter.StderrFormater{
			Writer:          buildConfig.Stdout,
			StreamFormatter: sf,
		},
		Verbose:         !buildConfig.SuppressOutput,
		UtilizeCache:    !buildConfig.NoCache,
		Remove:          buildConfig.Remove,
		ForceRemove:     buildConfig.ForceRemove,
		Pull:            buildConfig.Pull,
		OutOld:          buildConfig.Stdout,
//.........这里部分代码省略.........

// CmdCommit creates a new image from a container's changes.
//
// Usage: docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]
func (cli *DockerCli) CmdCommit(args ...string) error {
	cmd := Cli.Subcmd("commit", []string{"CONTAINER [REPOSITORY[:TAG]]"}, Cli.DockerCommands["commit"].Description, true)
	flPause := cmd.Bool([]string{"p", "-pause"}, true, "Pause container during commit")
	flComment := cmd.String([]string{"m", "-message"}, "", "Commit message")
	flAuthor := cmd.String([]string{"a", "-author"}, "", "Author (e.g., \"John Hannibal Smith <[email protected]>\")")
	flChanges := opts.NewListOpts(nil)
	cmd.Var(&flChanges, []string{"c", "-change"}, "Apply Dockerfile instruction to the created image")
	// FIXME: --run is deprecated, it will be replaced with inline Dockerfile commands.
	flConfig := cmd.String([]string{"#-run"}, "", "This option is deprecated and will be removed in a future version in favor of inline Dockerfile-compatible commands")
	cmd.Require(flag.Max, 2)
	cmd.Require(flag.Min, 1)

	cmd.ParseFlags(args, true)

	var (
		name             = cmd.Arg(0)
		repositoryAndTag = cmd.Arg(1)
		repositoryName   string
		tag              string
	)

	//Check if the given image name can be resolved
	if repositoryAndTag != "" {
		ref, err := reference.ParseNamed(repositoryAndTag)
		if err != nil {
			return err
		}
		if err := registry.ValidateRepositoryName(ref); err != nil {
			return err
		}

		repositoryName = ref.Name()

		switch x := ref.(type) {
		case reference.Digested:
			return errors.New("cannot commit to digest reference")
		case reference.Tagged:
			tag = x.Tag()
		}
	}

	v := url.Values{}
	v.Set("container", name)
	v.Set("repo", repositoryName)
	v.Set("tag", tag)
	v.Set("comment", *flComment)
	v.Set("author", *flAuthor)
	for _, change := range flChanges.GetAll() {
		v.Add("changes", change)
	}

	if *flPause != true {
		v.Set("pause", "0")
	}

	var (
		config   *runconfig.Config
		response types.ContainerCommitResponse
	)

	if *flConfig != "" {
		config = &runconfig.Config{}
		if err := json.Unmarshal([]byte(*flConfig), config); err != nil {
			return err
		}
	}
	serverResp, err := cli.call("POST", "/commit?"+v.Encode(), config, nil)
	if err != nil {
		return err
	}

	defer serverResp.body.Close()

	if err := json.NewDecoder(serverResp.body).Decode(&response); err != nil {
		return err
	}

	fmt.Fprintln(cli.out, response.ID)
	return nil
}

//.........这里部分代码省略.........
		Formatter: sf,
		NewLines:  true,
		ID:        "",
		Action:    "Sending build context to Docker daemon",
	})

	var memory int64
	if *flMemoryString != "" {
		parsedMemory, err := units.RAMInBytes(*flMemoryString)
		if err != nil {
			return err
		}
		memory = parsedMemory
	}

	var memorySwap int64
	if *flMemorySwap != "" {
		if *flMemorySwap == "-1" {
			memorySwap = -1
		} else {
			parsedMemorySwap, err := units.RAMInBytes(*flMemorySwap)
			if err != nil {
				return err
			}
			memorySwap = parsedMemorySwap
		}
	}
	// Send the build context
	v := &url.Values{}

	//Check if the given image name can be resolved
	if *tag != "" {
		repository, tag := parsers.ParseRepositoryTag(*tag)
		if err := registry.ValidateRepositoryName(repository); err != nil {
			return err
		}
		if len(tag) > 0 {
			if err := tags.ValidateTagName(tag); err != nil {
				return err
			}
		}
	}

	v.Set("t", *tag)

	if *suppressOutput {
		v.Set("q", "1")
	}
	if isRemote {
		v.Set("remote", cmd.Arg(0))
	}
	if *noCache {
		v.Set("nocache", "1")
	}
	if *rm {
		v.Set("rm", "1")
	} else {
		v.Set("rm", "0")
	}

	if *forceRm {
		v.Set("forcerm", "1")
	}

	if *pull {
		v.Set("pull", "1")

func (b *BuilderJob) CmdBuild(job *engine.Job) engine.Status {
	if len(job.Args) != 0 {
		return job.Errorf("Usage: %s\n", job.Name)
	}
	var (
		dockerfileName = job.Getenv("dockerfile")
		remoteURL      = job.Getenv("remote")
		repoName       = job.Getenv("t")
		suppressOutput = job.GetenvBool("q")
		noCache        = job.GetenvBool("nocache")
		rm             = job.GetenvBool("rm")
		forceRm        = job.GetenvBool("forcerm")
		pull           = job.GetenvBool("pull")
		authConfig     = &registry.AuthConfig{}
		configFile     = &registry.ConfigFile{}
		tag            string
		context        io.ReadCloser
	)

	job.GetenvJson("authConfig", authConfig)
	job.GetenvJson("configFile", configFile)

	repoName, tag = parsers.ParseRepositoryTag(repoName)
	if repoName != "" {
		if err := registry.ValidateRepositoryName(repoName); err != nil {
			return job.Error(err)
		}
		if len(tag) > 0 {
			if err := graph.ValidateTagName(tag); err != nil {
				return job.Error(err)
			}
		}
	}

	if remoteURL == "" {
		context = ioutil.NopCloser(job.Stdin)
	} else if urlutil.IsGitURL(remoteURL) {
		if !urlutil.IsGitTransport(remoteURL) {
			remoteURL = "https://" + remoteURL
		}
		root, err := ioutil.TempDir("", "docker-build-git")
		if err != nil {
			return job.Error(err)
		}
		defer os.RemoveAll(root)

		if output, err := exec.Command("git", "clone", "--recursive", remoteURL, root).CombinedOutput(); err != nil {
			return job.Errorf("Error trying to use git: %s (%s)", err, output)
		}

		c, err := archive.Tar(root, archive.Uncompressed)
		if err != nil {
			return job.Error(err)
		}
		context = c
	} else if urlutil.IsURL(remoteURL) {
		f, err := utils.Download(remoteURL)
		if err != nil {
			return job.Error(err)
		}
		defer f.Body.Close()
		dockerFile, err := ioutil.ReadAll(f.Body)
		if err != nil {
			return job.Error(err)
		}

		// When we're downloading just a Dockerfile put it in
		// the default name - don't allow the client to move/specify it
		dockerfileName = api.DefaultDockerfileName

		c, err := archive.Generate(dockerfileName, string(dockerFile))
		if err != nil {
			return job.Error(err)
		}
		context = c
	}
	defer context.Close()

	sf := utils.NewStreamFormatter(job.GetenvBool("json"))

	builder := &Builder{
		Daemon: b.Daemon,
		Engine: b.Engine,
		OutStream: &utils.StdoutFormater{
			Writer:          job.Stdout,
			StreamFormatter: sf,
		},
		ErrStream: &utils.StderrFormater{
			Writer:          job.Stdout,
			StreamFormatter: sf,
		},
		Verbose:         !suppressOutput,
		UtilizeCache:    !noCache,
		Remove:          rm,
		ForceRemove:     forceRm,
		Pull:            pull,
		OutOld:          job.Stdout,
		StreamFormatter: sf,
		AuthConfig:      authConfig,
		AuthConfigFile:  configFile,
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	// Now reset the dockerfileName to be relative to the build context
	opts.DockerfileName, err = filepath.Rel(absRoot, filename)
	if err != nil {
		return err
	}
	// And canonicalize dockerfile name to a platform-independent one
	opts.DockerfileName, err = archive.CanonicalTarNameForPath(opts.DockerfileName)
	if err != nil {
		return fmt.Errorf("Cannot canonicalize dockerfile path %s: %v", opts.DockerfileName, err)
	}

	if _, err = os.Lstat(filename); os.IsNotExist(err) {
		return fmt.Errorf("Cannot locate Dockerfile: %s", origDockerfile)
	}
	var includes = []string{"."}

	f, err := os.Open(filepath.Join(root, ".dockerignore"))
	if err != nil && !os.IsNotExist(err) {
		return err
	}
	defer f.Close()

	var excludes []string
	if err == nil {
		excludes, err = utils.ReadDockerIgnore(f)
		if err != nil {
			return err
		}
	}

	if err := utils.ValidateContextDirectory(root, excludes); err != nil {
		return fmt.Errorf("Error checking context: '%s'.", err)
	}

	// If .dockerignore mentions .dockerignore or the Dockerfile
	// then make sure we send both files over to the daemon
	// because Dockerfile is, obviously, needed no matter what, and
	// .dockerignore is needed to know if either one needs to be
	// removed.  The deamon will remove them for us, if needed, after it
	// parses the Dockerfile.
	keepThem1, _ := fileutils.Matches(".dockerignore", excludes)
	keepThem2, _ := fileutils.Matches(opts.DockerfileName, excludes)
	if keepThem1 || keepThem2 {
		includes = append(includes, ".dockerignore", opts.DockerfileName)
	}

	if err := utils.ValidateContextDirectory(root, excludes); err != nil {
		return fmt.Errorf("Error checking context: '%s'.", err)
	}
	options := &archive.TarOptions{
		Compression:     archive.Uncompressed,
		ExcludePatterns: excludes,
		IncludeFiles:    includes,
	}
	context, err = archive.TarWithOptions(root, options)
	if err != nil {
		return err
	}
	var body io.Reader
	// Setup an upload progress bar
	// FIXME: ProgressReader shouldn't be this annoying to use
	if context != nil {
		sf := streamformatter.NewStreamFormatter()
		body = progressreader.New(progressreader.Config{
			In:        context,
			Out:       os.Stdout,
			Formatter: sf,
			NewLines:  true,
			ID:        "",
			Action:    "Sending build context to Docker daemon",
		})
	}

	if opts.ImageName == "" {
		// set a image name
		name = rand.RandStr(10, "alphanum")
	} else {
		name = opts.ImageName
		repository, tag := parsers.ParseRepositoryTag(name)
		if err := registry.ValidateRepositoryName(repository); err != nil {
			return err
		}
		if len(tag) > 0 {
			if err := tags.ValidateTagName(tag); err != nil {
				return err
			}
		}
	}
	v := url.Values{}
	v.Set("name", name)
	headers := http.Header(make(map[string][]string))
	if context != nil {
		headers.Set("Content-Type", "application/tar")
	}
	err = cli.stream("POST", "/image/build?"+v.Encode(), body, cli.out, headers)
	if err != nil {
		return err
	}
	return nil
}

func (s *router) postBuild(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
	var (
		authConfigs        = map[string]cliconfig.AuthConfig{}
		authConfigsEncoded = r.Header.Get("X-Registry-Config")
		buildConfig        = &dockerfile.Config{}
	)

	if authConfigsEncoded != "" {
		authConfigsJSON := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authConfigsEncoded))
		if err := json.NewDecoder(authConfigsJSON).Decode(&authConfigs); err != nil {
			// for a pull it is not an error if no auth was given
			// to increase compatibility with the existing api it is defaulting
			// to be empty.
		}
	}

	w.Header().Set("Content-Type", "application/json")

	version := httputils.VersionFromContext(ctx)
	output := ioutils.NewWriteFlusher(w)
	sf := streamformatter.NewJSONStreamFormatter()
	errf := func(err error) error {
		// Do not write the error in the http output if it's still empty.
		// This prevents from writing a 200(OK) when there is an interal error.
		if !output.Flushed() {
			return err
		}
		_, err = w.Write(sf.FormatError(errors.New(utils.GetErrorMessage(err))))
		if err != nil {
			logrus.Warnf("could not write error response: %v", err)
		}
		return nil
	}

	if httputils.BoolValue(r, "forcerm") && version.GreaterThanOrEqualTo("1.12") {
		buildConfig.Remove = true
	} else if r.FormValue("rm") == "" && version.GreaterThanOrEqualTo("1.12") {
		buildConfig.Remove = true
	} else {
		buildConfig.Remove = httputils.BoolValue(r, "rm")
	}
	if httputils.BoolValue(r, "pull") && version.GreaterThanOrEqualTo("1.16") {
		buildConfig.Pull = true
	}

	repoName, tag := parsers.ParseRepositoryTag(r.FormValue("t"))
	if repoName != "" {
		if err := registry.ValidateRepositoryName(repoName); err != nil {
			return errf(err)
		}
		if len(tag) > 0 {
			if err := tags.ValidateTagName(tag); err != nil {
				return errf(err)
			}
		}
	}

	buildConfig.DockerfileName = r.FormValue("dockerfile")
	buildConfig.Verbose = !httputils.BoolValue(r, "q")
	buildConfig.UseCache = !httputils.BoolValue(r, "nocache")
	buildConfig.ForceRemove = httputils.BoolValue(r, "forcerm")
	buildConfig.MemorySwap = httputils.Int64ValueOrZero(r, "memswap")
	buildConfig.Memory = httputils.Int64ValueOrZero(r, "memory")
	buildConfig.CPUShares = httputils.Int64ValueOrZero(r, "cpushares")
	buildConfig.CPUPeriod = httputils.Int64ValueOrZero(r, "cpuperiod")
	buildConfig.CPUQuota = httputils.Int64ValueOrZero(r, "cpuquota")
	buildConfig.CPUSetCpus = r.FormValue("cpusetcpus")
	buildConfig.CPUSetMems = r.FormValue("cpusetmems")
	buildConfig.CgroupParent = r.FormValue("cgroupparent")

	var buildUlimits = []*ulimit.Ulimit{}
	ulimitsJSON := r.FormValue("ulimits")
	if ulimitsJSON != "" {
		if err := json.NewDecoder(strings.NewReader(ulimitsJSON)).Decode(&buildUlimits); err != nil {
			return errf(err)
		}
		buildConfig.Ulimits = buildUlimits
	}

	var buildArgs = map[string]string{}
	buildArgsJSON := r.FormValue("buildargs")
	if buildArgsJSON != "" {
		if err := json.NewDecoder(strings.NewReader(buildArgsJSON)).Decode(&buildArgs); err != nil {
			return errf(err)
		}
		buildConfig.BuildArgs = buildArgs
	}

	remoteURL := r.FormValue("remote")

	// Currently, only used if context is from a remote url.
	// The field `In` is set by DetectContextFromRemoteURL.
	// Look at code in DetectContextFromRemoteURL for more information.
	pReader := &progressreader.Config{
		// TODO: make progressreader streamformatter-agnostic
		Out:       output,
		Formatter: sf,
		Size:      r.ContentLength,
		NewLines:  true,
		ID:        "Downloading context",
//.........这里部分代码省略.........

func Build(d *daemon.Daemon, buildConfig *Config) error {
	var (
		repoName string
		tag      string
		context  io.ReadCloser
	)

	repoName, tag = parsers.ParseRepositoryTag(buildConfig.RepoName)
	if repoName != "" {
		if err := registry.ValidateRepositoryName(repoName); err != nil {
			return err
		}
		if len(tag) > 0 {
			if err := tags.ValidateTagName(tag); err != nil {
				return err
			}
		}
	}

	if buildConfig.RemoteURL == "" {
		context = ioutil.NopCloser(buildConfig.Context)
	} else if urlutil.IsGitURL(buildConfig.RemoteURL) {
		root, err := utils.GitClone(buildConfig.RemoteURL)
		if err != nil {
			return err
		}
		defer os.RemoveAll(root)

		c, err := archive.Tar(root, archive.Uncompressed)
		if err != nil {
			return err
		}
		context = c
	} else if urlutil.IsURL(buildConfig.RemoteURL) {
		f, err := httputils.Download(buildConfig.RemoteURL)
		if err != nil {
			return err
		}
		defer f.Body.Close()
		dockerFile, err := ioutil.ReadAll(f.Body)
		if err != nil {
			return err
		}

		// When we're downloading just a Dockerfile put it in
		// the default name - don't allow the client to move/specify it
		buildConfig.DockerfileName = api.DefaultDockerfileName

		c, err := archive.Generate(buildConfig.DockerfileName, string(dockerFile))
		if err != nil {
			return err
		}
		context = c
	}
	defer context.Close()

	sf := streamformatter.NewJSONStreamFormatter()

	builder := &Builder{
		Daemon: d,
		OutStream: &streamformatter.StdoutFormater{
			Writer:          buildConfig.Stdout,
			StreamFormatter: sf,
		},
		ErrStream: &streamformatter.StderrFormater{
			Writer:          buildConfig.Stdout,
			StreamFormatter: sf,
		},
		Verbose:         !buildConfig.SuppressOutput,
		UtilizeCache:    !buildConfig.NoCache,
		Remove:          buildConfig.Remove,
		ForceRemove:     buildConfig.ForceRemove,
		Pull:            buildConfig.Pull,
		OutOld:          buildConfig.Stdout,
		StreamFormatter: sf,
		AuthConfig:      buildConfig.AuthConfig,
		ConfigFile:      buildConfig.ConfigFile,
		dockerfileName:  buildConfig.DockerfileName,
		cpuShares:       buildConfig.CpuShares,
		cpuPeriod:       buildConfig.CpuPeriod,
		cpuQuota:        buildConfig.CpuQuota,
		cpuSetCpus:      buildConfig.CpuSetCpus,
		cpuSetMems:      buildConfig.CpuSetMems,
		cgroupParent:    buildConfig.CgroupParent,
		memory:          buildConfig.Memory,
		memorySwap:      buildConfig.MemorySwap,
		cancelled:       buildConfig.WaitCancelled(),
	}

	id, err := builder.Run(context)
	if err != nil {
		return err
	}

	if repoName != "" {
		return d.Repositories().Tag(repoName, tag, id, true)
	}
	return nil
}

// CmdCommit creates a new image from a container's changes.
//
// Usage: docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]
func (cli *DockerCli) CmdCommit(args ...string) error {
	cmd := Cli.Subcmd("commit", []string{"CONTAINER [REPOSITORY[:TAG]]"}, Cli.DockerCommands["commit"].Description, true)
	flPause := cmd.Bool([]string{"p", "-pause"}, true, "Pause container during commit")
	flComment := cmd.String([]string{"m", "-message"}, "", "Commit message")
	flAuthor := cmd.String([]string{"a", "-author"}, "", "Author (e.g., \"John Hannibal Smith <[email protected]>\")")
	flChanges := opts.NewListOpts(nil)
	cmd.Var(&flChanges, []string{"c", "-change"}, "Apply Dockerfile instruction to the created image")
	// FIXME: --run is deprecated, it will be replaced with inline Dockerfile commands.
	flConfig := cmd.String([]string{"#-run"}, "", "This option is deprecated and will be removed in a future version in favor of inline Dockerfile-compatible commands")
	cmd.Require(flag.Max, 2)
	cmd.Require(flag.Min, 1)

	cmd.ParseFlags(args, true)

	var (
		name             = cmd.Arg(0)
		repositoryAndTag = cmd.Arg(1)
		repositoryName   string
		tag              string
	)

	//Check if the given image name can be resolved
	if repositoryAndTag != "" {
		ref, err := reference.ParseNamed(repositoryAndTag)
		if err != nil {
			return err
		}
		if err := registry.ValidateRepositoryName(ref); err != nil {
			return err
		}

		repositoryName = ref.Name()

		switch x := ref.(type) {
		case reference.Digested:
			return errors.New("cannot commit to digest reference")
		case reference.Tagged:
			tag = x.Tag()
		}
	}

	var config *runconfig.Config
	if *flConfig != "" {
		config = &runconfig.Config{}
		if err := json.Unmarshal([]byte(*flConfig), config); err != nil {
			return err
		}
	}

	options := types.ContainerCommitOptions{
		ContainerID:    name,
		RepositoryName: repositoryName,
		Tag:            tag,
		Comment:        *flComment,
		Author:         *flAuthor,
		Changes:        flChanges.GetAll(),
		Pause:          *flPause,
		Config:         config,
	}

	response, err := cli.client.ContainerCommit(options)
	if err != nil {
		return err
	}

	fmt.Fprintln(cli.out, response.ID)
	return nil
}

// CmdImport creates an empty filesystem image, imports the contents of the tarball into the image, and optionally tags the image.
//
// The URL argument is the address of a tarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz) file or a path to local file relative to docker client. If the URL is '-', then the tar file is read from STDIN.
//
// Usage: docker import [OPTIONS] file|URL|- [REPOSITORY[:TAG]]
func (cli *DockerCli) CmdImport(args ...string) error {
	cmd := Cli.Subcmd("import", []string{"file|URL|- [REPOSITORY[:TAG]]"}, Cli.DockerCommands["import"].Description, true)
	flChanges := opts.NewListOpts(nil)
	cmd.Var(&flChanges, []string{"c", "-change"}, "Apply Dockerfile instruction to the created image")
	message := cmd.String([]string{"m", "-message"}, "", "Set commit message for imported image")
	cmd.Require(flag.Min, 1)

	cmd.ParseFlags(args, true)

	var (
		in         io.Reader
		tag        string
		src        = cmd.Arg(0)
		srcName    = src
		repository = cmd.Arg(1)
		changes    = flChanges.GetAll()
	)

	if cmd.NArg() == 3 {
		fmt.Fprintf(cli.err, "[DEPRECATED] The format 'file|URL|- [REPOSITORY [TAG]]' has been deprecated. Please use file|URL|- [REPOSITORY[:TAG]]\n")
		tag = cmd.Arg(2)
	}

	if repository != "" {
		//Check if the given image name can be resolved
		ref, err := reference.ParseNamed(repository)
		if err != nil {
			return err
		}
		if err := registry.ValidateRepositoryName(ref); err != nil {
			return err
		}
	}

	if src == "-" {
		in = cli.in
	} else if !urlutil.IsURL(src) {
		srcName = "-"
		file, err := os.Open(src)
		if err != nil {
			return err
		}
		defer file.Close()
		in = file

	}

	options := types.ImageImportOptions{
		Source:         in,
		SourceName:     srcName,
		RepositoryName: repository,
		Message:        *message,
		Tag:            tag,
		Changes:        changes,
	}

	responseBody, err := cli.client.ImageImport(options)
	if err != nil {
		return err
	}
	defer responseBody.Close()

	return jsonmessage.DisplayJSONMessagesStream(responseBody, cli.out, cli.outFd, cli.isTerminalOut)
}