func TestBuildInheritance(t *testing.T) {
	eng := NewTestEngine(t)
	defer nuke(mkDaemonFromEngine(eng, t))

	img, err := buildImage(testContextTemplate{`
            from {IMAGE}
            expose 4243
            `,
		nil, nil}, t, eng, true)

	if err != nil {
		t.Fatal(err)
	}

	img2, _ := buildImage(testContextTemplate{fmt.Sprintf(`
            from %s
            entrypoint ["/bin/echo"]
            `, img.ID),
		nil, nil}, t, eng, true)

	if err != nil {
		t.Fatal(err)
	}

	// from child
	if img2.Config.Entrypoint[0] != "/bin/echo" {
		t.Fail()
	}

	// from parent
	if _, exists := img.Config.ExposedPorts[nat.NewPort("tcp", "4243")]; !exists {
		t.Fail()
	}
}

func TestBuildExpose(t *testing.T) {
	img, err := buildImage(testContextTemplate{`
        from {IMAGE}
        expose 4243
        `,
		nil, nil}, t, nil, true)
	if err != nil {
		t.Fatal(err)
	}

	if _, exists := img.Config.ExposedPorts[nat.NewPort("tcp", "4243")]; !exists {
		t.Fail()
	}
}

//.........这里部分代码省略.........
	}
	if len(parsedArgs) > 1 {
		runCmd = parsedArgs[1:]
	}
	if *flEntrypoint != "" {
		entrypoint = []string{*flEntrypoint}
	}

	lxcConf, err := parseKeyValueOpts(flLxcOpts)
	if err != nil {
		return nil, nil, cmd, err
	}

	var (
		domainname string
		hostname   = *flHostname
		parts      = strings.SplitN(hostname, ".", 2)
	)
	if len(parts) > 1 {
		hostname = parts[0]
		domainname = parts[1]
	}

	ports, portBindings, err := nat.ParsePortSpecs(flPublish.GetAll())
	if err != nil {
		return nil, nil, cmd, err
	}

	// Merge in exposed ports to the map of published ports
	for _, e := range flExpose.GetAll() {
		if strings.Contains(e, ":") {
			return nil, nil, cmd, fmt.Errorf("Invalid port format for --expose: %s", e)
		}
		p := nat.NewPort(nat.SplitProtoPort(e))
		if _, exists := ports[p]; !exists {
			ports[p] = struct{}{}
		}
	}

	// collect all the environment variables for the container
	envVariables := []string{}
	for _, ef := range flEnvFile.GetAll() {
		parsedVars, err := opts.ParseEnvFile(ef)
		if err != nil {
			return nil, nil, cmd, err
		}
		envVariables = append(envVariables, parsedVars...)
	}
	// parse the '-e' and '--env' after, to allow override
	envVariables = append(envVariables, flEnv.GetAll()...)
	// boo, there's no debug output for docker run
	//utils.Debugf("Environment variables for the container: %#v", envVariables)

	netMode, err := parseNetMode(*flNetMode)
	if err != nil {
		return nil, nil, cmd, fmt.Errorf("--net: invalid net mode: %v", err)
	}

	config := &Config{
		Hostname:        hostname,
		Domainname:      domainname,
		PortSpecs:       nil, // Deprecated
		ExposedPorts:    ports,
		User:            *flUser,
		Tty:             *flTty,
		NetworkDisabled: !*flNetwork,

//.........这里部分代码省略.........
			flVolumes.Set(dstDir)
			binds = append(binds, bind)
			flVolumes.Delete(bind)
		} else if bind == "/" {
			return nil, nil, cmd, fmt.Errorf("Invalid volume: path can't be '/'")
		}
	}

	var (
		parsedArgs = cmd.Args()
		runCmd     []string
		entrypoint []string
		image      string
	)
	if len(parsedArgs) >= 1 {
		image = cmd.Arg(0)
	}
	if len(parsedArgs) > 1 {
		runCmd = parsedArgs[1:]
	}
	if *flEntrypoint != "" {
		entrypoint = []string{*flEntrypoint}
	}

	lxcConf, err := parseLxcConfOpts(flLxcOpts)
	if err != nil {
		return nil, nil, cmd, err
	}

	var (
		domainname string
		hostname   = *flHostname
		parts      = strings.SplitN(hostname, ".", 2)
	)
	if len(parts) > 1 {
		hostname = parts[0]
		domainname = parts[1]
	}

	ports, portBindings, err := nat.ParsePortSpecs(flPublish.GetAll())
	if err != nil {
		return nil, nil, cmd, err
	}

	// Merge in exposed ports to the map of published ports
	for _, e := range flExpose.GetAll() {
		if strings.Contains(e, ":") {
			return nil, nil, cmd, fmt.Errorf("Invalid port format for --expose: %s", e)
		}
		p := nat.NewPort(nat.SplitProtoPort(e))
		if _, exists := ports[p]; !exists {
			ports[p] = struct{}{}
		}
	}

	config := &Config{
		Hostname:        hostname,
		Domainname:      domainname,
		PortSpecs:       nil, // Deprecated
		ExposedPorts:    ports,
		User:            *flUser,
		Tty:             *flTty,
		NetworkDisabled: !*flNetwork,
		OpenStdin:       *flStdin,
		Memory:          flMemory,
		CpuShares:       *flCpuShares,
		AttachStdin:     flAttach.Get("stdin"),
		AttachStdout:    flAttach.Get("stdout"),
		AttachStderr:    flAttach.Get("stderr"),
		Env:             flEnv.GetAll(),
		Cmd:             runCmd,
		Dns:             flDns.GetAll(),
		Image:           image,
		Volumes:         flVolumes.GetMap(),
		VolumesFrom:     strings.Join(flVolumesFrom.GetAll(), ","),
		Entrypoint:      entrypoint,
		WorkingDir:      *flWorkingDir,
	}

	hostConfig := &HostConfig{
		Binds:           binds,
		ContainerIDFile: *flContainerIDFile,
		LxcConf:         lxcConf,
		Privileged:      *flPrivileged,
		PortBindings:    portBindings,
		Links:           flLinks.GetAll(),
		PublishAllPorts: *flPublishAll,
	}

	if sysInfo != nil && flMemory > 0 && !sysInfo.SwapLimit {
		//fmt.Fprintf(stdout, "WARNING: Your kernel does not support swap limit capabilities. Limitation discarded.\n")
		config.MemorySwap = -1
	}

	// When allocating stdin in attached mode, close stdin at client disconnect
	if config.OpenStdin && config.AttachStdin {
		config.StdinOnce = true
	}
	return config, hostConfig, cmd, nil
}