From v2.4.4, acme.sh support to issue a cert from an existing csr.
There are 2 commands related:
1. Display the content of the csr
It shows the subject and domain names in the csr.
2. Issue a cert from the csr
The first parameter is the csr file, all the other parameters are same as --issue command.
For example, you can specify different webroot folders for each domain in the csr:
Another example, using dns mode:
The parameters are same as --issue command.
See : https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert