Function CopyToContainer

pkg/lib/docker/docker.go:251–278

The provided input will be extracted into the container's containerPath directory

(containerID string, input *archive.Input, containerPath string)

// The provided input will be extracted into the container's containerPath directory
func CopyToContainer(containerID string, input *archive.Input, containerPath string) error {
	if !strings.HasPrefix(containerPath, "/") {
		return errors.ErrorUnexpected("containerPath must start with /")
	}

	dockerClient, err := GetDockerClient()
	if err != nil {
		return err
	}

	// this is necessary to ensure that missing parent directories are created in the container
	input.AddPrefix = filepath.Join(containerPath, input.AddPrefix)

	buf := new(bytes.Buffer)
	_, err = archive.TarToWriter(input, buf)
	if err != nil {
		return err
	}

	err = dockerClient.CopyToContainer(context.Background(), containerID, "/", buf, dockertypes.CopyToContainerOptions{
		AllowOverwriteDirWithFile: true,
	})
	if err != nil {
		return WrapDockerError(err)
	}

	return nil
}

// The file or directory name of containerPath will be preserved in localDir
// For example, if the container has /aaa/zzz.txt,