It serves purpose decoupling logic into multiple Symfony2 commands and executing one after another.

ChainCommand.php

<?php

namespace Railhard\ImportBundle\Command;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

abstract class ChainCommand extends Command
{

    /**
     * @return array like ['doctrine:schema:drop', 'doctrine:schema:create']
     */
    abstract protected function getCommands();

    /**
     * {@inheritdoc}
     */
    final protected function execute(InputInterface $input, OutputInterface $output)
    {
        /** @var Command[] $commands */
        $commands = [];

        foreach ($this->getCommands() as $commandName) {
            $command = $this->getApplication()->find($commandName);

            if (!$command)
                throw new \Exception($commandName .' command was not found');

            $commands[$commandName] = $command;
        }

        foreach ($commands as $commandName => $command) {
            $returnCode = $command->run($input, $output);

            if ($returnCode != 0)
                throw new \Exception($commandName .' failed...');

            $output->writeln($commandName .' did it\'s job...');
        }

    }
}