# File lib/docker/container.rb, line 310
  def read_file(path)
    content = StringIO.new
    archive_out(path) do |chunk|
      content.write chunk
    end

    content.rewind

    Gem::Package::TarReader.new(content) do |tar|
      tar.each do |tarfile|
        return tarfile.read
      end
    end
  end