feat(nginx): Add nginx reverse proxy for HTTP access on port 80

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: moriroKim

docker-compose.dev.yml

@@ -1,4 +1,14 @@
 services:
+  nginx:
+    image: nginx:alpine
+    restart: unless-stopped
+    ports:
+      - "80:80"
+    volumes:
+      - ./docker/nginx/default.conf:/etc/nginx/conf.d/default.conf:ro
+    depends_on:
+      - api
+
   postgres:
     image: postgres:16-alpine
     restart: unless-stopped

docker/nginx/default.conf

@@ -0,0 +1,17 @@
+server {
+    listen 80;
+    server_name _;
+
+    # API proxy
+    location / {
+        proxy_pass http://api:3000;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection 'upgrade';
+        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;
+        proxy_cache_bypass $http_upgrade;
+    }
+}