Milestone 3

frontend/nginx.conf

@@ -0,0 +1,45 @@
+server {
+    listen 80;
+    listen [::]:80;
+    server_name _;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Reasonable hardening — TLS is terminated by an external reverse proxy
+    # so we don't add HSTS here (let the edge own that header).
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-Frame-Options "DENY" always;
+    add_header Referrer-Policy "same-origin" always;
+
+    # Internal liveness for the docker healthcheck.
+    location = /healthz {
+        access_log off;
+        return 200 "ok\n";
+        add_header Content-Type text/plain;
+    }
+
+    # Proxy API calls to the Flask service on the compose network.
+    location /api/ {
+        proxy_pass         http://api:8000;
+        proxy_http_version 1.1;
+        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_read_timeout 60s;
+        client_max_body_size 64m;
+    }
+
+    # SPA fallback — every unknown route returns index.html.
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Long cache for hashed assets.
+    location ~* \.(?:js|css|woff2?|svg|png|jpg|jpeg|webp|ico)$ {
+        expires 30d;
+        add_header Cache-Control "public, immutable";
+        try_files $uri =404;
+    }
+}