feat: initial project structure (Model Project) - Backend + Multi-Frontend + Docker

infra/backend.Dockerfile

@@ -0,0 +1,7 @@
+FROM node:20-slim
+WORKDIR /app
+COPY package*.json ./
+RUN npm install --production
+COPY . .
+EXPOSE 4001
+CMD ["node", "server.js"]

infra/nginx.conf

@@ -0,0 +1,19 @@
+server {
+    listen 80;
+    server_name localhost;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Proxy para API se necessário (redundância)
+    location /api/ {
+        proxy_pass http://backend:4001;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+        proxy_set_header Host $host;
+    }
+}