chore: add Docker config files and fix fail2ban bind mount path

Docker/nginx.conf

@@ -0,0 +1,34 @@
+server {
+    listen 80;
+    server_name _;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # ── Gzip compression ─────────────────────────────────────
+    gzip on;
+    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript image/svg+xml;
+    gzip_min_length 256;
+
+    # ── API reverse proxy → backend container ─────────────────
+    location /api/ {
+        proxy_pass         http://backend:8000;
+        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;
+    }
+
+    # ── Static assets with long-term caching ──────────────────
+    location /assets/ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+        try_files $uri =404;
+    }
+
+    # ── SPA fallback — serve index.html for client routes ─────
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+}