How to create ssl for domain and how can i use for subdomains


Please guide me how to generate SSL for the domain and how can I use that certificate for subdomains.

My domain name is “”, for this I want SSL.
My subdomains are “” and "’ how can I use the certificate for this subdomains.

My all subdomains running under docker using nginx-proxy.
My nginx-proxy was “jwilder/nginx-proxy”


If you want to use a single cert for,, and, then request a single cert with those three names on it. Start here:


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