deleted file mode 100644

@@ -1,927 +0,0 @@

-package builder

-

-import (

-	"crypto/sha256"

-	"encoding/hex"

-	"encoding/json"

-	"errors"

-	"fmt"

-	"io"

-	"io/ioutil"

-	"net/url"

-	"os"

-	"path"

-	"path/filepath"

-	"reflect"

-	"regexp"

-	"sort"

-	"strings"

-	"syscall"

-	"time"

-

-	"github.com/docker/docker/archive"

-	"github.com/docker/docker/daemon"

-	"github.com/docker/docker/engine"

-	"github.com/docker/docker/nat"

-	"github.com/docker/docker/pkg/parsers"

-	"github.com/docker/docker/pkg/symlink"

-	"github.com/docker/docker/pkg/system"

-	"github.com/docker/docker/pkg/tarsum"

-	"github.com/docker/docker/registry"

-	"github.com/docker/docker/runconfig"

-	"github.com/docker/docker/utils"

-)

-

-var (

-	ErrDockerfileEmpty = errors.New("Dockerfile cannot be empty")

-)

-

-type BuildFile interface {

-	Build(io.Reader) (string, error)

-	CmdFrom(string) error

-	CmdRun(string) error

-}

-

-type buildFile struct {

-	daemon *daemon.Daemon

-	eng    *engine.Engine

-

-	image      string

-	maintainer string

-	config     *runconfig.Config

-

-	contextPath string

-	context     *tarsum.TarSum

-

-	verbose      bool

-	utilizeCache bool

-	rm           bool

-	forceRm      bool

-

-	authConfig *registry.AuthConfig

-	configFile *registry.ConfigFile

-

-	tmpContainers map[string]struct{}

-	tmpImages     map[string]struct{}

-

-	outStream io.Writer

-	errStream io.Writer

-

-	// Deprecated, original writer used for ImagePull. To be removed.

-	outOld io.Writer

-	sf     *utils.StreamFormatter

-

-	// cmdSet indicates is CMD was set in current Dockerfile

-	cmdSet bool

-}

-

-func (b *buildFile) clearTmp(containers map[string]struct{}) {

-	for c := range containers {

-		tmp := b.daemon.Get(c)

-		if err := b.daemon.Destroy(tmp); err != nil {

-			fmt.Fprintf(b.outStream, "Error removing intermediate container %s: %s\n", utils.TruncateID(c), err.Error())

-		} else {

-			delete(containers, c)

-			fmt.Fprintf(b.outStream, "Removing intermediate container %s\n", utils.TruncateID(c))

-		}

-	}

-}

-

-func (b *buildFile) CmdFrom(name string) error {

-	image, err := b.daemon.Repositories().LookupImage(name)

-	if err != nil {

-		if b.daemon.Graph().IsNotExist(err) {

-			remote, tag := parsers.ParseRepositoryTag(name)

-			pullRegistryAuth := b.authConfig

-			if len(b.configFile.Configs) > 0 {

-				// The request came with a full auth config file, we prefer to use that

-				endpoint, _, err := registry.ResolveRepositoryName(remote)

-				if err != nil {

-					return err

-				}

-				resolvedAuth := b.configFile.ResolveAuthConfig(endpoint)

-				pullRegistryAuth = &resolvedAuth

-			}

-			job := b.eng.Job("pull", remote, tag)

-			job.SetenvBool("json", b.sf.Json())

-			job.SetenvBool("parallel", true)

-			job.SetenvJson("authConfig", pullRegistryAuth)

-			job.Stdout.Add(b.outOld)

-			if err := job.Run(); err != nil {

-				return err

-			}

-			image, err = b.daemon.Repositories().LookupImage(name)

-			if err != nil {

-				return err

-			}

-		} else {

-			return err

-		}

-	}

-	b.image = image.ID

-	b.config = &runconfig.Config{}

-	if image.Config != nil {

-		b.config = image.Config

-	}

-	if b.config.Env == nil || len(b.config.Env) == 0 {

-		b.config.Env = append(b.config.Env, "PATH="+daemon.DefaultPathEnv)

-	}

-	// Process ONBUILD triggers if they exist

-	if nTriggers := len(b.config.OnBuild); nTriggers != 0 {

-		fmt.Fprintf(b.errStream, "# Executing %d build triggers\n", nTriggers)

-	}

-

-	// Copy the ONBUILD triggers, and remove them from the config, since the config will be commited.

-	onBuildTriggers := b.config.OnBuild

-	b.config.OnBuild = []string{}

-

-	for n, step := range onBuildTriggers {

-		splitStep := strings.Split(step, " ")

-		stepInstruction := strings.ToUpper(strings.Trim(splitStep[0], " "))

-		switch stepInstruction {

-		case "ONBUILD":

-			return fmt.Errorf("Source image contains forbidden chained `ONBUILD ONBUILD` trigger: %s", step)

-		case "MAINTAINER", "FROM":

-			return fmt.Errorf("Source image contains forbidden %s trigger: %s", stepInstruction, step)

-		}

-		if err := b.BuildStep(fmt.Sprintf("onbuild-%d", n), step); err != nil {

-			return err

-		}

-	}

-	return nil

-}

-

-// The ONBUILD command declares a build instruction to be executed in any future build

-// using the current image as a base.

-func (b *buildFile) CmdOnbuild(trigger string) error {

-	splitTrigger := strings.Split(trigger, " ")

-	triggerInstruction := strings.ToUpper(strings.Trim(splitTrigger[0], " "))

-	switch triggerInstruction {

-	case "ONBUILD":

-		return fmt.Errorf("Chaining ONBUILD via `ONBUILD ONBUILD` isn't allowed")

-	case "MAINTAINER", "FROM":

-		return fmt.Errorf("%s isn't allowed as an ONBUILD trigger", triggerInstruction)

-	}

-	b.config.OnBuild = append(b.config.OnBuild, trigger)

-	return b.commit("", b.config.Cmd, fmt.Sprintf("ONBUILD %s", trigger))

-}

-

-func (b *buildFile) CmdMaintainer(name string) error {

-	b.maintainer = name

-	return b.commit("", b.config.Cmd, fmt.Sprintf("MAINTAINER %s", name))

-}

-

-// probeCache checks to see if image-caching is enabled (`b.utilizeCache`)

-// and if so attempts to look up the current `b.image` and `b.config` pair

-// in the current server `b.daemon`. If an image is found, probeCache returns

-// `(true, nil)`. If no image is found, it returns `(false, nil)`. If there

-// is any error, it returns `(false, err)`.

-func (b *buildFile) probeCache() (bool, error) {

-	if b.utilizeCache {

-		if cache, err := b.daemon.ImageGetCached(b.image, b.config); err != nil {

-			return false, err

-		} else if cache != nil {

-			fmt.Fprintf(b.outStream, " ---> Using cache\n")

-			utils.Debugf("[BUILDER] Use cached version")

-			b.image = cache.ID

-			return true, nil

-		} else {

-			utils.Debugf("[BUILDER] Cache miss")

-		}

-	}

-	return false, nil

-}

-

-func (b *buildFile) CmdRun(args string) error {

-	if b.image == "" {

-		return fmt.Errorf("Please provide a source image with `from` prior to run")

-	}

-	config, _, _, err := runconfig.Parse(append([]string{b.image}, b.buildCmdFromJson(args)...), nil)

-	if err != nil {

-		return err

-	}

-

-	cmd := b.config.Cmd

-	// set Cmd manually, this is special case only for Dockerfiles

-	b.config.Cmd = config.Cmd

-	runconfig.Merge(b.config, config)

-

-	defer func(cmd []string) { b.config.Cmd = cmd }(cmd)

-

-	utils.Debugf("Command to be executed: %v", b.config.Cmd)

-

-	hit, err := b.probeCache()

-	if err != nil {

-		return err

-	}

-	if hit {

-		return nil

-	}

-

-	c, err := b.create()

-	if err != nil {

-		return err

-	}

-	// Ensure that we keep the container mounted until the commit

-	// to avoid unmounting and then mounting directly again

-	c.Mount()

-	defer c.Unmount()

-

-	err = b.run(c)

-	if err != nil {

-		return err

-	}

-	if err := b.commit(c.ID, cmd, "run"); err != nil {

-		return err

-	}

-

-	return nil

-}

-

-func (b *buildFile) FindEnvKey(key string) int {

-	for k, envVar := range b.config.Env {

-		envParts := strings.SplitN(envVar, "=", 2)

-		if key == envParts[0] {

-			return k

-		}

-	}

-	return -1

-}

-

-func (b *buildFile) ReplaceEnvMatches(value string) (string, error) {

-	exp, err := regexp.Compile("(\\\\\\\\+|[^\\\\]|\\b|\\A)\\$({?)([[:alnum:]_]+)(}?)")

-	if err != nil {

-		return value, err

-	}

-	matches := exp.FindAllString(value, -1)

-	for _, match := range matches {

-		match = match[strings.Index(match, "$"):]

-		matchKey := strings.Trim(match, "${}")

-

-		for _, envVar := range b.config.Env {

-			envParts := strings.SplitN(envVar, "=", 2)

-			envKey := envParts[0]

-			envValue := envParts[1]

-

-			if envKey == matchKey {

-				value = strings.Replace(value, match, envValue, -1)

-				break

-			}

-		}

-	}

-	return value, nil

-}

-

-func (b *buildFile) CmdEnv(args string) error {

-	tmp := strings.SplitN(args, " ", 2)

-	if len(tmp) != 2 {

-		return fmt.Errorf("Invalid ENV format")

-	}

-	key := strings.Trim(tmp[0], " \t")

-	value := strings.Trim(tmp[1], " \t")

-

-	envKey := b.FindEnvKey(key)

-	replacedValue, err := b.ReplaceEnvMatches(value)

-	if err != nil {

-		return err

-	}

-	replacedVar := fmt.Sprintf("%s=%s", key, replacedValue)

-

-	if envKey >= 0 {

-		b.config.Env[envKey] = replacedVar

-	} else {

-		b.config.Env = append(b.config.Env, replacedVar)

-	}

-	return b.commit("", b.config.Cmd, fmt.Sprintf("ENV %s", replacedVar))

-}

-

-func (b *buildFile) buildCmdFromJson(args string) []string {

-	var cmd []string

-	if err := json.Unmarshal([]byte(args), &cmd); err != nil {

-		utils.Debugf("Error unmarshalling: %s, setting to /bin/sh -c", err)

-		cmd = []string{"/bin/sh", "-c", args}

-	}

-	return cmd

-}

-

-func (b *buildFile) CmdCmd(args string) error {

-	cmd := b.buildCmdFromJson(args)

-	b.config.Cmd = cmd

-	if err := b.commit("", b.config.Cmd, fmt.Sprintf("CMD %v", cmd)); err != nil {

-		return err

-	}

-	b.cmdSet = true

-	return nil

-}

-

-func (b *buildFile) CmdEntrypoint(args string) error {

-	entrypoint := b.buildCmdFromJson(args)

-	b.config.Entrypoint = entrypoint

-	// if there is no cmd in current Dockerfile - cleanup cmd

-	if !b.cmdSet {

-		b.config.Cmd = nil

-	}

-	if err := b.commit("", b.config.Cmd, fmt.Sprintf("ENTRYPOINT %v", entrypoint)); err != nil {

-		return err

-	}

-	return nil

-}

-

-func (b *buildFile) CmdExpose(args string) error {

-	portsTab := strings.Split(args, " ")

-

-	if b.config.ExposedPorts == nil {

-		b.config.ExposedPorts = make(nat.PortSet)

-	}

-	ports, _, err := nat.ParsePortSpecs(append(portsTab, b.config.PortSpecs...))

-	if err != nil {

-		return err

-	}

-	for port := range ports {

-		if _, exists := b.config.ExposedPorts[port]; !exists {

-			b.config.ExposedPorts[port] = struct{}{}

-		}

-	}

-	b.config.PortSpecs = nil

-

-	return b.commit("", b.config.Cmd, fmt.Sprintf("EXPOSE %v", ports))

-}

-

-func (b *buildFile) CmdUser(args string) error {

-	b.config.User = args

-	return b.commit("", b.config.Cmd, fmt.Sprintf("USER %v", args))

-}

-

-func (b *buildFile) CmdInsert(args string) error {

-	return fmt.Errorf("INSERT has been deprecated. Please use ADD instead")

-}

-

-func (b *buildFile) CmdCopy(args string) error {

-	return b.runContextCommand(args, false, false, "COPY")

-}

-

-func (b *buildFile) CmdWorkdir(workdir string) error {

-	if workdir[0] == '/' {

-		b.config.WorkingDir = workdir

-	} else {

-		if b.config.WorkingDir == "" {

-			b.config.WorkingDir = "/"

-		}

-		b.config.WorkingDir = filepath.Join(b.config.WorkingDir, workdir)

-	}

-	return b.commit("", b.config.Cmd, fmt.Sprintf("WORKDIR %v", workdir))

-}

-

-func (b *buildFile) CmdVolume(args string) error {

-	if args == "" {

-		return fmt.Errorf("Volume cannot be empty")

-	}

-

-	var volume []string

-	if err := json.Unmarshal([]byte(args), &volume); err != nil {

-		volume = []string{args}

-	}

-	if b.config.Volumes == nil {

-		b.config.Volumes = map[string]struct{}{}

-	}

-	for _, v := range volume {

-		b.config.Volumes[v] = struct{}{}

-	}

-	if err := b.commit("", b.config.Cmd, fmt.Sprintf("VOLUME %s", args)); err != nil {

-		return err

-	}

-	return nil

-}

-

-func (b *buildFile) checkPathForAddition(orig string) error {

-	origPath := path.Join(b.contextPath, orig)

-	if p, err := filepath.EvalSymlinks(origPath); err != nil {

-		if os.IsNotExist(err) {

-			return fmt.Errorf("%s: no such file or directory", orig)

-		}

-		return err

-	} else {

-		origPath = p

-	}

-	if !strings.HasPrefix(origPath, b.contextPath) {

-		return fmt.Errorf("Forbidden path outside the build context: %s (%s)", orig, origPath)

-	}

-	_, err := os.Stat(origPath)

-	if err != nil {

-		if os.IsNotExist(err) {

-			return fmt.Errorf("%s: no such file or directory", orig)

-		}

-		return err

-	}

-	return nil

-}

-

-func (b *buildFile) addContext(container *daemon.Container, orig, dest string, decompress bool) error {

-	var (

-		err        error

-		destExists = true

-		origPath   = path.Join(b.contextPath, orig)

-		destPath   = path.Join(container.RootfsPath(), dest)

-	)

-

-	if destPath != container.RootfsPath() {

-		destPath, err = symlink.FollowSymlinkInScope(destPath, container.RootfsPath())

-		if err != nil {

-			return err

-		}

-	}

-

-	// Preserve the trailing '/'

-	if strings.HasSuffix(dest, "/") || dest == "." {

-		destPath = destPath + "/"

-	}

-

-	destStat, err := os.Stat(destPath)

-	if err != nil {

-		if !os.IsNotExist(err) {

-			return err

-		}

-		destExists = false

-	}

-

-	fi, err := os.Stat(origPath)

-	if err != nil {

-		if os.IsNotExist(err) {

-			return fmt.Errorf("%s: no such file or directory", orig)

-		}

-		return err

-	}

-

-	if fi.IsDir() {

-		return copyAsDirectory(origPath, destPath, destExists)

-	}

-

-	// If we are adding a remote file (or we've been told not to decompress), do not try to untar it

-	if decompress {

-		// First try to unpack the source as an archive

-		// to support the untar feature we need to clean up the path a little bit

-		// because tar is very forgiving.  First we need to strip off the archive's

-		// filename from the path but this is only added if it does not end in / .

-		tarDest := destPath

-		if strings.HasSuffix(tarDest, "/") {

-			tarDest = filepath.Dir(destPath)

-		}

-

-		// try to successfully untar the orig

-		if err := archive.UntarPath(origPath, tarDest); err == nil {

-			return nil

-		} else if err != io.EOF {

-			utils.Debugf("Couldn't untar %s to %s: %s", origPath, tarDest, err)

-		}

-	}

-

-	if err := os.MkdirAll(path.Dir(destPath), 0755); err != nil {

-		return err

-	}

-	if err := archive.CopyWithTar(origPath, destPath); err != nil {

-		return err

-	}

-

-	resPath := destPath

-	if destExists && destStat.IsDir() {

-		resPath = path.Join(destPath, path.Base(origPath))

-	}

-

-	return fixPermissions(resPath, 0, 0)

-}

-

-func (b *buildFile) runContextCommand(args string, allowRemote bool, allowDecompression bool, cmdName string) error {

-	if b.context == nil {

-		return fmt.Errorf("No context given. Impossible to use %s", cmdName)

-	}

-	tmp := strings.SplitN(args, " ", 2)

-	if len(tmp) != 2 {

-		return fmt.Errorf("Invalid %s format", cmdName)

-	}

-

-	orig, err := b.ReplaceEnvMatches(strings.Trim(tmp[0], " \t"))

-	if err != nil {

-		return err

-	}

-

-	dest, err := b.ReplaceEnvMatches(strings.Trim(tmp[1], " \t"))

-	if err != nil {

-		return err

-	}

-

-	cmd := b.config.Cmd

-	b.config.Cmd = []string{"/bin/sh", "-c", fmt.Sprintf("#(nop) %s %s in %s", cmdName, orig, dest)}

-	defer func(cmd []string) { b.config.Cmd = cmd }(cmd)

-	b.config.Image = b.image

-

-	var (

-		origPath   = orig

-		destPath   = dest

-		remoteHash string

-		isRemote   bool

-		decompress = true

-	)

-

-	isRemote = utils.IsURL(orig)

-	if isRemote && !allowRemote {

-		return fmt.Errorf("Source can't be an URL for %s", cmdName)

-	} else if utils.IsURL(orig) {

-		// Initiate the download

-		resp, err := utils.Download(orig)

-		if err != nil {

-			return err

-		}

-

-		// Create a tmp dir

-		tmpDirName, err := ioutil.TempDir(b.contextPath, "docker-remote")

-		if err != nil {

-			return err

-		}

-

-		// Create a tmp file within our tmp dir

-		tmpFileName := path.Join(tmpDirName, "tmp")

-		tmpFile, err := os.OpenFile(tmpFileName, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0600)

-		if err != nil {

-			return err

-		}

-		defer os.RemoveAll(tmpDirName)

-

-		// Download and dump result to tmp file

-		if _, err := io.Copy(tmpFile, resp.Body); err != nil {

-			tmpFile.Close()

-			return err

-		}

-		tmpFile.Close()

-

-		// Remove the mtime of the newly created tmp file

-		if err := system.UtimesNano(tmpFileName, make([]syscall.Timespec, 2)); err != nil {

-			return err

-		}

-

-		origPath = path.Join(filepath.Base(tmpDirName), filepath.Base(tmpFileName))

-

-		// Process the checksum

-		r, err := archive.Tar(tmpFileName, archive.Uncompressed)

-		if err != nil {

-			return err

-		}

-		tarSum := &tarsum.TarSum{Reader: r, DisableCompression: true}

-		if _, err := io.Copy(ioutil.Discard, tarSum); err != nil {

-			return err

-		}

-		remoteHash = tarSum.Sum(nil)

-		r.Close()

-

-		// If the destination is a directory, figure out the filename.

-		if strings.HasSuffix(dest, "/") {

-			u, err := url.Parse(orig)

-			if err != nil {

-				return err

-			}

-			path := u.Path

-			if strings.HasSuffix(path, "/") {

-				path = path[:len(path)-1]

-			}

-			parts := strings.Split(path, "/")

-			filename := parts[len(parts)-1]

-			if filename == "" {

-				return fmt.Errorf("cannot determine filename from url: %s", u)

-			}

-			destPath = dest + filename

-		}

-	}

-

-	if err := b.checkPathForAddition(origPath); err != nil {

-		return err

-	}

-

-	// Hash path and check the cache

-	if b.utilizeCache {

-		var (

-			hash string

-			sums = b.context.GetSums()

-		)

-

-		if remoteHash != "" {

-			hash = remoteHash

-		} else if fi, err := os.Stat(path.Join(b.contextPath, origPath)); err != nil {

-			return err

-		} else if fi.IsDir() {

-			var subfiles []string

-			for file, sum := range sums {

-				absFile := path.Join(b.contextPath, file)

-				absOrigPath := path.Join(b.contextPath, origPath)

-				if strings.HasPrefix(absFile, absOrigPath) {

-					subfiles = append(subfiles, sum)

-				}

-			}

-			sort.Strings(subfiles)

-			hasher := sha256.New()

-			hasher.Write([]byte(strings.Join(subfiles, ",")))

-			hash = "dir:" + hex.EncodeToString(hasher.Sum(nil))

-		} else {

-			if origPath[0] == '/' && len(origPath) > 1 {

-				origPath = origPath[1:]

-			}

-			origPath = strings.TrimPrefix(origPath, "./")

-			if h, ok := sums[origPath]; ok {

-				hash = "file:" + h

-			}

-		}

-		b.config.Cmd = []string{"/bin/sh", "-c", fmt.Sprintf("#(nop) %s %s in %s", cmdName, hash, dest)}

-		hit, err := b.probeCache()

-		if err != nil {

-			return err

-		}

-		// If we do not have a hash, never use the cache

-		if hit && hash != "" {

-			return nil

-		}

-	}

-

-	// Create the container

-	container, _, err := b.daemon.Create(b.config, "")

-	if err != nil {

-		return err

-	}

-	b.tmpContainers[container.ID] = struct{}{}

-

-	if err := container.Mount(); err != nil {

-		return err

-	}

-	defer container.Unmount()

-

-	if !allowDecompression || isRemote {

-		decompress = false

-	}

-	if err := b.addContext(container, origPath, destPath, decompress); err != nil {

-		return err

-	}

-

-	if err := b.commit(container.ID, cmd, fmt.Sprintf("%s %s in %s", cmdName, orig, dest)); err != nil {

-		return err

-	}

-	return nil

-}

-

-func (b *buildFile) CmdAdd(args string) error {

-	return b.runContextCommand(args, true, true, "ADD")

-}

-

-func (b *buildFile) create() (*daemon.Container, error) {

-	if b.image == "" {

-		return nil, fmt.Errorf("Please provide a source image with `from` prior to run")

-	}

-	b.config.Image = b.image

-

-	// Create the container

-	c, _, err := b.daemon.Create(b.config, "")

-	if err != nil {

-		return nil, err

-	}

-	b.tmpContainers[c.ID] = struct{}{}

-	fmt.Fprintf(b.outStream, " ---> Running in %s\n", utils.TruncateID(c.ID))

-

-	// override the entry point that may have been picked up from the base image

-	c.Path = b.config.Cmd[0]

-	c.Args = b.config.Cmd[1:]

-

-	return c, nil

-}

-

-func (b *buildFile) run(c *daemon.Container) error {

-	var errCh chan error

-	if b.verbose {

-		errCh = utils.Go(func() error {

-			// FIXME: call the 'attach' job so that daemon.Attach can be made private

-			//

-			// FIXME (LK4D4): Also, maybe makes sense to call "logs" job, it is like attach

-			// but without hijacking for stdin. Also, with attach there can be race

-			// condition because of some output already was printed before it.

-			return <-b.daemon.Attach(c, nil, nil, b.outStream, b.errStream)

-		})

-	}

-

-	//start the container

-	if err := c.Start(); err != nil {

-		return err

-	}

-

-	if errCh != nil {

-		if err := <-errCh; err != nil {

-			return err

-		}

-	}

-

-	// Wait for it to finish

-	if ret, _ := c.State.WaitStop(-1 * time.Second); ret != 0 {

-		err := &utils.JSONError{

-			Message: fmt.Sprintf("The command %v returned a non-zero code: %d", b.config.Cmd, ret),

-			Code:    ret,

-		}

-		return err

-	}

-

-	return nil

-}

-

-// Commit the container <id> with the autorun command <autoCmd>

-func (b *buildFile) commit(id string, autoCmd []string, comment string) error {

-	if b.image == "" {

-		return fmt.Errorf("Please provide a source image with `from` prior to commit")

-	}

-	b.config.Image = b.image

-	if id == "" {

-		cmd := b.config.Cmd

-		b.config.Cmd = []string{"/bin/sh", "-c", "#(nop) " + comment}

-		defer func(cmd []string) { b.config.Cmd = cmd }(cmd)

-

-		hit, err := b.probeCache()

-		if err != nil {

-			return err

-		}

-		if hit {

-			return nil

-		}

-

-		container, warnings, err := b.daemon.Create(b.config, "")

-		if err != nil {

-			return err

-		}

-		for _, warning := range warnings {

-			fmt.Fprintf(b.outStream, " ---> [Warning] %s\n", warning)

-		}

-		b.tmpContainers[container.ID] = struct{}{}

-		fmt.Fprintf(b.outStream, " ---> Running in %s\n", utils.TruncateID(container.ID))

-		id = container.ID

-

-		if err := container.Mount(); err != nil {

-			return err

-		}

-		defer container.Unmount()

-	}

-	container := b.daemon.Get(id)

-	if container == nil {

-		return fmt.Errorf("An error occured while creating the container")

-	}

-

-	// Note: Actually copy the struct

-	autoConfig := *b.config

-	autoConfig.Cmd = autoCmd

-	// Commit the container

-	image, err := b.daemon.Commit(container, "", "", "", b.maintainer, true, &autoConfig)

-	if err != nil {

-		return err

-	}

-	b.tmpImages[image.ID] = struct{}{}

-	b.image = image.ID

-	return nil

-}

-

-// Long lines can be split with a backslash

-var lineContinuation = regexp.MustCompile(`\\\s*\n`)

-

-func (b *buildFile) Build(context io.Reader) (string, error) {

-	tmpdirPath, err := ioutil.TempDir("", "docker-build")

-	if err != nil {

-		return "", err

-	}

-

-	decompressedStream, err := archive.DecompressStream(context)

-	if err != nil {

-		return "", err

-	}

-

-	b.context = &tarsum.TarSum{Reader: decompressedStream, DisableCompression: true}

-	if err := archive.Untar(b.context, tmpdirPath, nil); err != nil {

-		return "", err

-	}

-	defer os.RemoveAll(tmpdirPath)

-

-	b.contextPath = tmpdirPath

-	filename := path.Join(tmpdirPath, "Dockerfile")

-	if _, err := os.Stat(filename); os.IsNotExist(err) {

-		return "", fmt.Errorf("Can't build a directory with no Dockerfile")

-	}

-	fileBytes, err := ioutil.ReadFile(filename)

-	if err != nil {

-		return "", err

-	}

-	if len(fileBytes) == 0 {

-		return "", ErrDockerfileEmpty

-	}

-	var (

-		dockerfile = lineContinuation.ReplaceAllString(stripComments(fileBytes), "")

-		stepN      = 0

-	)

-	for _, line := range strings.Split(dockerfile, "\n") {

-		line = strings.Trim(strings.Replace(line, "\t", " ", -1), " \t\r\n")

-		if len(line) == 0 {

-			continue

-		}

-		if err := b.BuildStep(fmt.Sprintf("%d", stepN), line); err != nil {

-			if b.forceRm {

-				b.clearTmp(b.tmpContainers)

-			}

-			return "", err

-		} else if b.rm {

-			b.clearTmp(b.tmpContainers)

-		}

-		stepN += 1

-	}

-	if b.image != "" {

-		fmt.Fprintf(b.outStream, "Successfully built %s\n", utils.TruncateID(b.image))

-		return b.image, nil

-	}

-	return "", fmt.Errorf("No image was generated. This may be because the Dockerfile does not, like, do anything.\n")

-}

-

-// BuildStep parses a single build step from `instruction` and executes it in the current context.

-func (b *buildFile) BuildStep(name, expression string) error {

-	fmt.Fprintf(b.outStream, "Step %s : %s\n", name, expression)

-	tmp := strings.SplitN(expression, " ", 2)

-	if len(tmp) != 2 {

-		return fmt.Errorf("Invalid Dockerfile format")

-	}

-	instruction := strings.ToLower(strings.Trim(tmp[0], " "))

-	arguments := strings.Trim(tmp[1], " ")

-

-	method, exists := reflect.TypeOf(b).MethodByName("Cmd" + strings.ToUpper(instruction[:1]) + strings.ToLower(instruction[1:]))

-	if !exists {

-		fmt.Fprintf(b.errStream, "# Skipping unknown instruction %s\n", strings.ToUpper(instruction))

-		return nil

-	}

-

-	ret := method.Func.Call([]reflect.Value{reflect.ValueOf(b), reflect.ValueOf(arguments)})[0].Interface()

-	if ret != nil {

-		return ret.(error)

-	}

-

-	fmt.Fprintf(b.outStream, " ---> %s\n", utils.TruncateID(b.image))

-	return nil

-}

-

-func stripComments(raw []byte) string {

-	var (

-		out   []string

-		lines = strings.Split(string(raw), "\n")

-	)

-	for _, l := range lines {

-		if len(l) == 0 || l[0] == '#' {

-			continue

-		}

-		out = append(out, l)

-	}

-	return strings.Join(out, "\n")

-}

-

-func copyAsDirectory(source, destination string, destinationExists bool) error {

-	if err := archive.CopyWithTar(source, destination); err != nil {

-		return err