nginx.prod.conf

# Replace .mysite.tld with your domain
server {
    listen 80;
    server_name .mysite.tld;
    location / {
        return 301 https://$host$request_uri;
    }
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name .mysite.tld;

    ssl_certificate /etc/letsencrypt/live/mysite.tld/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/mysite.tld/privkey.pem;

    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers on;
    # curl https://ssl-config.mozilla.org/ffdhe2048.txt > .docker/certbot/dhparam/dhparam-2048.pem
    ssl_dhparam /etc/nginx/dhparam/dhparam-2048.pem;

    location / {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        proxy_set_header Host $http_host;
        proxy_set_header X-NginX-Proxy true;
        proxy_pass http://app:3000;
        proxy_redirect off;
    }
}