Drupal 8 deploy trick

install.php

<?php

/**
 * @file
 * Allow post config updates to run.
 */

/**
 * Implements hook_install().
 */
function exhibitor_relations_order_media_assets_install() {
  // Reset the schema version, so our update hooks can be processed after installation.
  $update_hook_names = [
    'exhibitor_relations_order_media_assets_post_update_8001',
    'exhibitor_relations_order_media_assets_post_update_8002',
  ];

  $key_value = \Drupal::keyValue('post_update');
  $existing_updates = $key_value->get('existing_updates');

  foreach ($update_hook_names as $update_hook_name) {
    $index = array_search($update_hook_name, $existing_updates);
    unset($existing_updates[$index]);
  }

  $key_value->set('existing_updates', $existing_updates);
}

// In .post_update.php, the two mentioned updates above will then be processed using this deploy flow:
// drush updb --no-post-updates
// drush cim
// drush updb