[QUESTION] How work certificat? How force generate certificat?

[yacineblr]

Context: I have 2 subdomains.

• a.domain.com, www.a.domain.com
• b.domain.com

Hi, I have a problem with the SSL certificate. I have created a wordpress container (from your project) with a domain name (ex: A.domain.com), everything works fine. I modify the hosts in .env file (in the wordpress project), so that it points to a new domain (B.domain.com).
I think I need to completely recreate the containers so that the changes in the .env file are taken into account, I perform these actions in wordpress-project:

docker-compose stop 
docker-compose rm
docker-compose create 
docker-compose start

The site is accessible, from http://B.domain.com but the https causes an error because the certificate is not valid. I realize that I am missing the "www.B.domain.com", so I create the subdomain but the site is still not functional in https.

The questions are:

• When are the SSL certificates generated?
  If I add a new wordpress site while the server is online, I just have to mount the docker-compose,
  and the new site will be available automatically?
• How to force the regeneration of the SSL certificate?