chore: update proxy pass of nginx

Author: kusuri12

default.conf

@@ -3,7 +3,7 @@ server {
     server_name _;
 
     location / {
-        proxy_pass http://localhost:8000;
+        proxy_pass http://hear_ai_container:8000;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;