Add static homelab dashboard with Docker and nginx setup

nginx.conf

@@ -0,0 +1,26 @@
+# Custom nginx config (used by the Dockerfile).
+# Serves the static dashboard with sensible caching + security headers.
+
+server {
+    listen       80;
+    server_name  _;
+
+    root   /usr/share/nginx/html;
+    index  index.html;
+
+    location / {
+        try_files $uri $uri/ =404;
+    }
+
+    # Security headers
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+    add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;
+
+    # Hide nginx version
+    server_tokens off;
+
+    access_log off;
+    error_log /var/log/nginx/error.log warn;
+}