Hi,
in case you are still interested:
domain: hassio.localdomain
certfile: fullchain.pem
keyfile: privkey.pem
hsts: max-age=31536000; includeSubDomains
cloudflare: false
customize:
active: true
default: /nginx.conf
servers: nginx_proxy/*.conf
and then creating a file called “nginx.conf” in the /share dir with e.g.
add_header Access-Control-Allow-Origin *;
(example might expose security risks)