feat: add Nginx reverse proxy service with rate limiting to docker-compose configuration

docker-compose.yml

@@ -1,6 +1,17 @@
 services:
   erika:
     build: .
-    ports:
-      - "8606:3000"
+    expose:
+      - "3000"
+    restart: unless-stopped
+
+  nginx:
+    image: nginx:alpine
+    container_name: erika-nginx
+    ports:
+      - "8606:80"
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf:ro
+    depends_on:
+      - erika
     restart: unless-stopped

nginx.conf

@@ -0,0 +1,37 @@
+worker_processes auto;
+
+events {
+    worker_connections 1024;
+}
+
+http {
+    # Enable logging to see what's happening
+    error_log /dev/stderr warn;
+    access_log /dev/stdout;
+
+    # Define rate limit zone: 10MB memory, 5 requests per second per IP
+    limit_req_zone $binary_remote_addr zone=ratelimit:10m rate=5r/s;
+
+    server {
+        listen 80;
+        
+        location / {
+            # Apply rate limit: allow burst of up to 10 requests without delay
+            limit_req zone=ratelimit burst=10 nodelay;
+            
+            # Proxy to the Next.js app
+            proxy_pass http://erika:3000;
+            
+            # Next.js often requires HTTP/1.1
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection "upgrade";
+            
+            # Forward headers
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+    }
+}