example.com {
  root * /var/www/wordpress
  encode gzip
  php_fastcgi unix//run/php/php-version-fpm.sock
  file_server
}

a.example.com {
  reverse_proxy http://127.0.0.1:8080
  log {
    output file /var/log/caddy/a.example.com.log
  }
}