Hello. I configured Nginx according to this instruction. Everything works great. It has become much more convenient. But the following question arose: ngnix is blocking ports 80 and 443 to obtain letsencrypt certificates. In order to regenerate the certificates, I had to manually stop nginx, get the certificates from the web interface and start nginx again Where can I add a line to stop Nginx before the automatic regeneration of certificates, and then start it? Thanks