feat(DevOps): ⚡ add nginx reverse proxy

nginx/conf.d/default.conf

@@ -0,0 +1,30 @@
+server {
+    listen 80;
+    server_name _;
+
+    location /api {
+      proxy_pass http://perplexica-backend:3001;
+      include proxy.conf;
+    }
+
+    location /ws {
+      proxy_pass http://perplexica-backend:3001;
+      proxy_http_version 1.1;
+      proxy_set_header Upgrade $http_upgrade;
+      proxy_set_header Connection "upgrade";
+    }
+
+    location / {
+      proxy_pass http://perplexica-frontend:3000;
+      include proxy.conf;
+    }
+
+    # If you want to support HTTPS, please uncomment the code snippet below
+    #listen 443 ssl;
+    #ssl_certificate ./../ssl/your_cert_file.cer;
+    #ssl_certificate_key ./../ssl/your_cert_key.key;
+    #ssl_protocols TLSv1.1 TLSv1.2 TLSv1.3;
+    #ssl_prefer_server_ciphers on;
+    #ssl_session_cache shared:SSL:10m;
+    #ssl_session_timeout 10m;
+}