magento-test/app/code/Magento/MediaGallery/etc/directory.xml

<?xml version="1.0"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_MediaGalleryApi:etc/directory.xsd">
    <exclude>
        <patterns>
            <pattern name="captcha">/^captcha/</pattern>
            <pattern name="customer">/^customer/</pattern>
            <pattern name="downloadable">/^downloadable/</pattern>
            <pattern name="import">/^import/</pattern>
            <pattern name="theme">/^theme/</pattern>
            <pattern name="theme_customization">/^theme_customization/</pattern>
            <pattern name="tmp">/^tmp/</pattern>
            <pattern name="directories-with-dots">/^\./</pattern>
        </patterns>
    </exclude>
</config>