docs: def main():
      """Start main part of the wait script."""
      logger.info('Waiting for database: `%s`', MYSQL_DB)
  
      connect_mysql(
          host=MYSQL_HOST, port=MYSQL_PORT,
          user=MYSQL_USER, password=MYSQL_PASSWORD,
          database=MYSQL_DB
      )
  
      logger.info('Database `%s` found', MYSQL_DB)