extenginx: update self-signed key to use subjectAltName

[theyoyojo]

Fixes: #242

Signed-off-by: Joel Savitz joel@underground.software

[charliemirabile]

I knew that there was a better way to do this and that I had shared it with you, but I could not for the life of me figure out where. Turns out I texted you a screenshot of my editor 🤦. Anyways, this can be done by just adding a single argument -addtext "subjectAltName = DNS:${NGINX_HOSTNAME}" to the command that actually generates the cert instead of all this crap with the config.

[theyoyojo]

Using -addtext gives me this error:

req: Multiple digest or unknown options: -sha256 and -addtext
req: Use -help for summary.

[charliemirabile]

Using -addtext gives me this error:

req: Multiple digest or unknown options: -sha256 and -addtext

oops, that was just a typo in transcribing the option from the screenshot. The actual option is -addext

req: Use -help for summary.

[charliemirabile]

lgtm