Create PHAR

create-phar

#!/usr/bin/env php
<?php

$phar = null;

try {
  $file = "dbdiff.phar";
  
  $phar = new Phar('./' . $file, FilesystemIterator::CURRENT_AS_FILEINFO | FilesystemIterator::KEY_AS_FILENAME, $file);

  $phar["index.php"] = file_get_contents("./dbdiff");

  $phar->buildFromDirectory("./src",'/.php$/');

  $phar->setStub($phar->createDefaultStub('index.php'));
} catch (Exception $e) {
  echo "The following error occurred and a PHAR archive could not be produced:\n" . $e;
}

echo var_dump($phar->getStub());

echo file_get_contents($file);

Dockerfile

# Disable PHAR readonly for producing PHAR archives
RUN echo 'phar.readonly=0' >> /usr/local/etc/php/conf.d/docker-php-phar-readonly.ini