server {
    listen 80 default_server;
    server_name _;

    location /.well-known/matrix/server {
        default_type application/json;
        return 200 '{"m.server": "${APP_DOMAIN}:443"}';
    }

    location /.well-known/matrix/client {
        default_type application/json;
        add_header Access-Control-Allow-Origin *;
        return 200 '{"m.homeserver": {"base_url": "https://${APP_DOMAIN}"}}';
    }

    location / {
        return 404;
    }
}