The nginx config for r3-api lives in this package under nginx subfolder. The default location for installation of all r3 packages is /usr/share/cybafelo.
When you install into this location (i.e. /usr/share/cybafelo/r3, /usr/share/cybafelo/r3-api ...) you will not have to modify the nginx configuration.
#SSL
For SSL web server deployments you are free to use the files:
For your browser to accept this certificate and not display a red warning, you can import the following certificate chain file into the CA section of your browser options.
And no - R3 does NOT support the silly web browser from a giant corrupt software company that now owns github.com
#Hosts
The hosts file contains the host aliases for localhost - it allows the nginx config to determine the mode (live or development), application (r3-api, r3-editor, etc) and the domain associated with the SSL certificate (in our case cybafelo.local)