[+] update gateway

1. some refactor for nginx_config.py;
  1.1. just tested
    that ssl-app can correctly
    show a remote_addr;
  1.1.1 TODO,
    figure out how to preserve this info
    when doing proxy_pass
    to ssl app; (hm, seems like no way);
  2. exposed ssl-app port
    at SSL_APP_PORTS endpoint;

d1/nginx_config.py

@@ -459,6 +459,7 @@ server {
 
 server {
   set $t1 $remote_addr;
+
   if ($http_x_forwarded_for)
   {
     set $t1 $http_x_forwarded_for;

docker-compose.yml

@@ -35,6 +35,8 @@ services:
       - ./tmp/d1/:/app/tmp/d1/:ro
       - ./tmp/d1/letsencrypt:/etc/letsencrypt:rw
     restart: on-failure
+    ports: 
+      - ${SSL_APP_PORTS:-"127.0.0.1:443"}:444
     networks:
       network: