How to work with wildcard certificate from localhost?

Question

Nginx

There is an internal working service signed with a wildcard certificate.
More precisely: I set up https for the service, for which I threw in a certificate and set up https for the host site. But https does not work for level 4 domain names.

i.e.:

https://sitename.domain.com - works
https://temp1.sitename.domain.com - doesn't work. Only over http.

Everything runs on the same host in docker containers.
I want to transfer containers from a virtual machine to my car and work locally without connecting to an Internet.
Question: how will and will the certificate be processed and how to locally test whether https is working?

Answer 1

A wildcard certificate only works for one domain level, it does not work for subdomains of the wildcard certificate itself.
thanks Ziptar