Run Doctrine migrations on composer install

composer.json

{
    "scripts": {
        "symfony-scripts": [
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
        ],
        "default-params": [
            "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters"
        ],
        "post-install-cmd": [
            "@symfony-scripts",
            "AppBundle\\Composer\\MigrationHandler::runMigrations"
        ],
        "post-update-cmd": [
            "@symfony-scripts"
        ]
    }
}

MigrationHandler.php

<?php

namespace AppBundle\Composer;

use Composer\Script\Event;
use Sensio\Bundle\DistributionBundle\Composer\ScriptHandler;

class MigrationHandler extends ScriptHandler
{
    /**
     * Runs the Doctrine migrations.
     *
     * @param Event $event
     */
    public static function runMigrations(Event $event)
    {
        $options = static::getOptions($event);
        $consoleDir = static::getConsoleDir($event, 'run database migrations');

        if (null === $consoleDir) {
            return;
        }

        static::executeCommand($event, $consoleDir, 'doctrine:migrations:migrate -n', $options['process-timeout']);
    }
}