Just setting up a free HTTPS certificate for a client (thanks, letsencrypt and certbot! definitely going to push them to make a yearly donation) and I am worried that I can’t figure out exactly how certbot created the /.well-known/ folder on my Ubuntu 14.04 OS running nginx.
/usr/share/nginx/html/.well-known exists on my system, but it is empty.
If I change the root file folder from /usr/share/nginx/html will I have to more the .well-known directory as well? Or symlink to it from the new root directory?
What is .well-known exactly and how is it used?