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<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceContainer name="footer" remove="true">
        <referenceContainer name="footer-container">
            <block class="MagentoCmsBlockBlock" name="your_footer_cms_block_id">
                <arguments>
                    <argument name="block_id" xsi:type="string">your_footer_cms_block_id</argument>
                </arguments>
            </block>
        </referenceContainer>
    </body>
</page>