nginx.reverse.proxy.conf

 user                  nginx;
 worker_processes      auto;
 error_log             /var/log/nginx/error.log;
 pid                   /run/nginx.pid;

# Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
 include               /usr/share/nginx/modules/*.conf;

events {
	worker_connections    1024;
}

http {
	log_format            main '$remote_addr - $remote_user [$time_local] "$request" '
	'$status              $body_bytes_sent "$http_referer" '
	'"$http_user_agent"   "$http_x_forwarded_for"';

	access_log            /var/log/nginx/access.log;

	sendfile              on;
	tcp_nopush            on;
	tcp_nodelay           on;
	keepalive_timeout     65;
	types_hash_max_size   2048;

	include               /etc/nginx/mime.types;
	default_type          application/octet-stream;

	server {
		listen               [::]:80 default_server;
		server_name          subdomain.domain.com;
		root                 /usr/share/nginx/html;

		location / {
			proxy_pass          http://localhost:8080;
		}

		error_page           404 /404.html;
		location = /40x.html {
		}

		error_page           500 502 503 504 /50x.html;
		location = /50x.html {
		}

		listen               [::]:443 ssl ipv6only=on; # managed by Certbot
		listen               443 ssl; # managed by Certbot
		ssl_certificate      /etc/letsencrypt/live/subdomain.domain.com/fullchain.pem; # managed by Certbot
		ssl_certificate_key  /etc/letsencrypt/live/subdomain.domain.com/privkey.pem; # managed by Certbot
		include              /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
		ssl_dhparam          /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

	}

	server {
		if ($host = subdomain.domain.com) {
			return              301 https://$host$request_uri;
		}
		if ($host != subdomain.domain.com) {
			return              404;
		}
	}
}