public void testZipNonConcurrentResourceCollection() throws Exception {
    final File tarFile = getTestFile("target/output/zip-non-concurrent.tar");
    TarArchiver tarArchiver = (TarArchiver) lookup(Archiver.ROLE, "tar");
    tarArchiver.setDestFile(tarFile);
    // We're testing concurrency issue so we need large amount of files
    for (int i = 0; i < 100; i++) {
      tarArchiver.addFile(
          getTestFile("src/test/resources/manifests/manifest1.mf"), "manifest1.mf" + i);
      // Directories are added separately so let's test them too
      tarArchiver.addFile(
          getTestFile("src/test/resources/manifests/manifest2.mf"), "subdir" + i + "/manifest2.mf");
    }
    tarArchiver.createArchive();

    final File zipFile = new File("target/output/zip-non-concurrent.zip");
    ZipArchiver zipArchive = getZipArchiver(zipFile);
    zipArchive.addArchivedFileSet(tarFile, "prfx/");
    zipArchive.setEncoding("UTF-8");
    zipArchive.createArchive();

    final TarFile cmp1 = new TarFile(tarFile);
    final ZipFile cmp2 = new ZipFile(zipFile);
    ArchiveFileComparator.assertEquals(cmp1, cmp2, "prfx/");
    cmp1.close();
    cmp2.close();
  }
  @Override
  public TarArchiver customize(TarArchiver archiver) throws IOException {
    log.warn("/--------------------- SECURITY WARNING ---------------------\\");
    log.warn("|You are building a Docker image with normalized permissions.|");
    log.warn("|All files and directories added to build context will have  |");
    log.warn("|'-rwxr-xr-x' permissions. It is recommended to double check |");
    log.warn("|and reset permissions for sensitive files and directories.  |");
    log.warn("\\------------------------------------------------------------/");

    if (innerCustomizer != null) {
      archiver = innerCustomizer.customize(archiver);
    }

    TarArchiver newArchiver = new TarArchiver();
    newArchiver.setDestFile(archiver.getDestFile());
    newArchiver.setLongfile(TarLongFileMode.posix);

    ResourceIterator resources = archiver.getResources();
    while (resources.hasNext()) {
      ArchiveEntry ae = resources.next();
      String fileName = ae.getName();
      PlexusIoResource resource = ae.getResource();
      String name = StringUtils.replace(fileName, File.separatorChar, '/');

      // See docker source:
      // https://github.com/docker/docker/blob/3d13fddd2bc4d679f0eaa68b0be877e5a816ad53/pkg/archive/archive_windows.go#L45
      int mode = ae.getMode() & 0777;
      int newMode = mode;
      newMode &= 0755;
      newMode |= 0111;

      if (newMode != mode) {
        log.debug("Changing permissions of '%s' from %o to %o.", name, mode, newMode);
      }

      newArchiver.addResource(resource, name, newMode);
    }

    archiver = newArchiver;

    return archiver;
  }