have problem in font

[vahid alvandi]

i use lasted version of docker and intionizer i use cert ssl menthod and created /mailu/overrides/nginx/default.conf with this code

server {
  
	listen 443;

	server_name my.domain.com;

	ssl_certificate /certs/cert.pem;
	ssl_certificate_key /certs/key.pem;
    
	location / {
		proxy_set_header Host $host;
		proxy_set_header X-Real-IP $remote_addr;
		proxy_pass https://localhost:8443;
	}
  
}

but in docker logn return

front-1 | nginx: [emerg] "server" directive is not allowed here in /overrides/default.conf:1