I have successfully created a droplet with Ubuntu 16.04 running my secure django app through Letsencypt. My droplet serves “example.com” and “www.example.com” and I can see the green lock on my firefox when pointing to this application.
I understand that the first step is to “expand” the letsencrypt keys to include the two new domains. But what comes next? Please, can you be as much elaborate as possible? Please, keep in mind that the new droplets will have to be secure, too.
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