I remember I did that. If I recall correctly.

This should be fairly simple.

In your nginx conf add another server block for the new domain.

server {

listen 80;

listen [::]:80;

server_name your.new.domains;

location ~ /.well-known/acme-challenge {

allow all;

root /tmp/acme_challenge;

}

}

You can add another server_name there

Restart Nginx container.

In docker-compose-le.yaml, add another domain to the list

command: sh -c "certbot certonly --expand --webroot -w /tmp/acme_challenge -d test.leangaurav.com, your.new.domain --text --agree-tos --email your.email@email.com --rsa-key-size 4096 --verbose --keep-until-expiring --preferred-challenges=http"

Run lets encrypt container again.. and things should be good.

LMK if it worked !!