feat: Docker multi-stage build (Node build + nginx static serve)

nginx.conf

@@ -0,0 +1,35 @@
+server {
+    listen 3000;
+    server_name _;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Compression gzip
+    gzip on;
+    gzip_vary on;
+    gzip_proxied any;
+    gzip_comp_level 6;
+    gzip_types text/plain text/css application/json application/javascript text/xml application/xml text/javascript image/svg+xml;
+
+    # Cache statique long (JS/CSS hachés par Next.js)
+    location /_next/static/ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+
+    # Cache modéré pour les autres assets
+    location ~* \.(ico|png|jpg|jpeg|gif|svg|webp|woff2?|ttf|eot)$ {
+        expires 30d;
+        add_header Cache-Control "public";
+    }
+
+    # SPA fallback : toutes les routes renvoient index.html
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Pas de log pour favicon/robots
+    location = /favicon.ico { log_not_found off; access_log off; }
+    location = /robots.txt  { log_not_found off; access_log off; }
+}