Apply a .container or .container-fluid bootstrap class to base.php file in roots based Wordpress Theme

container-selector.php

/**
 * Return .container or .container-fluid
 * Add This to lib/extras.php
 */

function container_selector( $page_url, $full_width_pages ){
    if ( in_array( $page_url, $full_width_pages ) ){
        return 'container-fluid';
    } else {
        return 'container';
    }
}

return-container.php

 /**
 * Add this to base.php
 * Add pages to the $full_width_pages array that you want to have a .container-fluid
 * echo $container on the .wrap element 
 */
 
 <?php
        $url = basename( Wrapper\template_path() );
        $full_width_pages = [ 'front-page.php', 'page-about.php', ];
        $container = Roots\Sage\Extras\container_selector( $url, $full_width_pages );
      ?>