Exemplo n.º 1
0
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")
}
Exemplo n.º 2
0
func (b *Builder) readContext(context io.Reader) 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
	}

	b.contextPath = tmpdirPath
	return nil
}
Exemplo n.º 3
0
func (b *Builder) readContext(context io.Reader) error {
	tmpdirPath, err := ioutil.TempDir("", "docker-build")
	if err != nil {
		return err
	}

	decompressedStream, err := archive.DecompressStream(context)
	if err != nil {
		return err
	}

	if b.context, err = tarsum.NewTarSum(decompressedStream, true, tarsum.Version0); err != nil {
		return err
	}
	if err := archive.Untar(b.context, tmpdirPath, nil); err != nil {
		return err
	}

	b.contextPath = tmpdirPath
	return nil
}