fix(nginx): no-cache no index.html + immutable nos assets — evita versão congelada no browser

frontend/Dockerfile

@@ -1,17 +1,14 @@
-# Stage 1: Build Vite React App
+# Stage 1: Build
 FROM node:20-alpine AS builder
-WORKDIR /app
-COPY update-version.js .
-COPY frontend/package*.json frontend/
 WORKDIR /app/frontend
+COPY frontend/package*.json .
 RUN npm install
 COPY frontend/ .
 RUN npm run build
 
-# Stage 2: Serve static files with high-performance Nginx on port 3013
+# Stage 2: Serve
 FROM nginx:alpine
 COPY --from=builder /app/frontend/dist /usr/share/nginx/html
-# Simple internal Nginx routing for single-page React router stability
-RUN echo 'server { listen 3013; location / { root /usr/share/nginx/html; index index.html; try_files $uri $uri/ /index.html; } }' > /etc/nginx/conf.d/default.conf
+COPY frontend/nginx.conf /etc/nginx/conf.d/default.conf
 EXPOSE 3013
 CMD ["nginx", "-g", "daemon off;"]

frontend/nginx.conf

@@ -0,0 +1,19 @@
+server {
+    listen 3013;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Assets com hash (Vite): cache imutável por 1 ano
+    location /assets/ {
+        add_header Cache-Control "public, max-age=31536000, immutable";
+        try_files $uri =404;
+    }
+
+    # index.html: nunca cachear — o browser sempre busca a versão mais recente
+    location / {
+        add_header Cache-Control "no-cache, no-store, must-revalidate";
+        add_header Pragma "no-cache";
+        add_header Expires "0";
+        try_files $uri $uri/ /index.html;
+    }
+}