This port installs the "standalone" client only, which does not use and
is not the certbot-auto bootstrap/wrapper script.

The simplest form of usage to obtain certificates is:

 # sudo certbot certonly --standalone -d <domain>, [domain2, ... domainN]>

NOTE:

The client requires the ability to bind on TCP port 80 or 443 (depending
on the --preferred-challenges option used). If a server is running on that
port, it will need to be temporarily stopped so that the standalone server
can listen on that port to complete the challenge authentication process.

For more information on the 'standalone' mode, see:

  https://certbot.eff.org/docs/using.html#standalone

The certbot plugins to support apache and nginx certificate installation
will be made available in the following ports:

 * Apache plugin: security/py-certbot-apache
 * Nginx plugin: security/py-certbot-nginx

In order to automatically renew the certificates, add this line to
/etc/periodic.conf:

    weekly_certbot_enable="YES"

More config details in the certbot periodic script:

    /usr/local/etc/periodic/weekly/500.certbot-3.7