Add registry_rebuild to docker sflinux/baseimage used for Drupal projects.

Refs: #75639

Dockerfile

@@ -27,7 +27,7 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get -y install wget git mysql-client mysq
 RUN pear channel-discover pear.drush.org && pear install drush/drush 
 RUN pear channel-discover pear.phpmd.org && pear channel-discover 'pear.pdepend.org' && pear install --alldeps 'phpmd/PHP_PMD'
 RUN wget https://phar.phpunit.de/phpcpd.phar && chmod +x phpcpd.phar && mv phpcpd.phar /usr/local/bin/phpcpd
-RUN drush dl site_audit -y
+RUN drush dl site_audit registry_rebuild -y
 RUN pecl install -Z uploadprogress && echo "extension=uploadprogress.so" >> /etc/php5/apache2/conf.d/uploadprogress.ini && ln -s /etc/php5/mods-available/uploadprogress.ini /etc/php5/apache2/conf.d/20-uploadprogress.ini
 RUN curl -sS https://getcomposer.org/installer | php && mv composer.phar /usr/local/bin/composer && mkdir /opt/drupalextension/
 COPY composer.json /opt/drupalextension/composer.json