func loadSize(value interface{}) (int64, error) {
	switch value := value.(type) {
	case int:
		return int64(value), nil
	case string:
		return units.RAMInBytes(value)
	}
	panic(fmt.Errorf("invalid type for size %T", value))
}

func parseStorageOpt(storageOpt map[string]string) (*storageOptions, error) {
	options := storageOptions{}

	// Read size to change the block device size per container.
	for key, val := range storageOpt {
		key := strings.ToLower(key)
		switch key {
		case "size":
			size, err := units.RAMInBytes(val)
			if err != nil {
				return nil, err
			}
			options.size = uint64(size)
		default:
			return nil, fmt.Errorf("Unknown storage option: %s", key)
		}
	}
	return &options, nil
}

func (m *memBytes) Set(value string) error {
	val, err := units.RAMInBytes(value)
	*m = memBytes(val)
	return err
}

// Parse parses the args for the specified command and generates a Config,
// a HostConfig and returns them with the specified command.
// If the specified args are not valid, it will return an error.
func Parse(flags *pflag.FlagSet, copts *ContainerOptions) (*container.Config, *container.HostConfig, *networktypes.NetworkingConfig, error) {
	var (
		attachStdin  = copts.attach.Get("stdin")
		attachStdout = copts.attach.Get("stdout")
		attachStderr = copts.attach.Get("stderr")
	)

	// Validate the input mac address
	if copts.macAddress != "" {
		if _, err := ValidateMACAddress(copts.macAddress); err != nil {
			return nil, nil, nil, fmt.Errorf("%s is not a valid mac address", copts.macAddress)
		}
	}
	if copts.stdin {
		attachStdin = true
	}
	// If -a is not set, attach to stdout and stderr
	if copts.attach.Len() == 0 {
		attachStdout = true
		attachStderr = true
	}

	var err error

	var memory int64
	if copts.memoryString != "" {
		memory, err = units.RAMInBytes(copts.memoryString)
		if err != nil {
			return nil, nil, nil, err
		}
	}

	var memoryReservation int64
	if copts.memoryReservation != "" {
		memoryReservation, err = units.RAMInBytes(copts.memoryReservation)
		if err != nil {
			return nil, nil, nil, err
		}
	}

	var memorySwap int64
	if copts.memorySwap != "" {
		if copts.memorySwap == "-1" {
			memorySwap = -1
		} else {
			memorySwap, err = units.RAMInBytes(copts.memorySwap)
			if err != nil {
				return nil, nil, nil, err
			}
		}
	}

	var kernelMemory int64
	if copts.kernelMemory != "" {
		kernelMemory, err = units.RAMInBytes(copts.kernelMemory)
		if err != nil {
			return nil, nil, nil, err
		}
	}

	swappiness := copts.swappiness
	if swappiness != -1 && (swappiness < 0 || swappiness > 100) {
		return nil, nil, nil, fmt.Errorf("invalid value: %d. Valid memory swappiness range is 0-100", swappiness)
	}

	var shmSize int64
	if copts.shmSize != "" {
		shmSize, err = units.RAMInBytes(copts.shmSize)
		if err != nil {
			return nil, nil, nil, err
		}
	}

	// TODO FIXME units.RAMInBytes should have a uint64 version
	var maxIOBandwidth int64
	if copts.ioMaxBandwidth != "" {
		maxIOBandwidth, err = units.RAMInBytes(copts.ioMaxBandwidth)
		if err != nil {
			return nil, nil, nil, err
		}
		if maxIOBandwidth < 0 {
			return nil, nil, nil, fmt.Errorf("invalid value: %s. Maximum IO Bandwidth must be positive", copts.ioMaxBandwidth)
		}
	}

	var binds []string
	// add any bind targets to the list of container volumes
	for bind := range copts.volumes.GetMap() {
		if arr := volumeSplitN(bind, 2); len(arr) > 1 {
			// after creating the bind mount we want to delete it from the copts.volumes values because
			// we do not want bind mounts being committed to image configs
			binds = append(binds, bind)
			copts.volumes.Delete(bind)
		}
	}

	// Can't evaluate options passed into --tmpfs until we actually mount
//.........这里部分代码省略.........

//.........这里部分代码省略.........
		}
		buildCtx, err = archive.TarWithOptions(contextDir, &archive.TarOptions{
			Compression:     compression,
			ExcludePatterns: excludes,
			IncludeFiles:    includes,
		})
		if err != nil {
			return err
		}
	}

	ctx := context.Background()

	var resolvedTags []*resolvedTag
	if command.IsTrusted() {
		translator := func(ctx context.Context, ref reference.NamedTagged) (reference.Canonical, error) {
			return TrustedReference(ctx, dockerCli, ref, nil)
		}
		// Wrap the tar archive to replace the Dockerfile entry with the rewritten
		// Dockerfile which uses trusted pulls.
		buildCtx = replaceDockerfileTarWrapper(ctx, buildCtx, relDockerfile, translator, &resolvedTags)
	}

	// Setup an upload progress bar
	progressOutput := streamformatter.NewStreamFormatter().NewProgressOutput(progBuff, true)
	if !dockerCli.Out().IsTerminal() {
		progressOutput = &lastProgressOutput{output: progressOutput}
	}

	var body io.Reader = progress.NewProgressReader(buildCtx, progressOutput, 0, "", "Sending build context to Docker daemon")

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

	var memorySwap int64
	if options.memorySwap != "" {
		if options.memorySwap == "-1" {
			memorySwap = -1
		} else {
			parsedMemorySwap, err := units.RAMInBytes(options.memorySwap)
			if err != nil {
				return err
			}
			memorySwap = parsedMemorySwap
		}
	}

	var shmSize int64
	if options.shmSize != "" {
		shmSize, err = units.RAMInBytes(options.shmSize)
		if err != nil {
			return err
		}
	}

	authConfigs, _ := dockerCli.GetAllCredentials()
	buildOptions := types.ImageBuildOptions{
		Memory:         memory,
		MemorySwap:     memorySwap,
		Tags:           options.tags.GetAll(),