feat(docker): añadir Dockerfile para contenerizar la aplicación

src/components/Modal.tsx

@@ -0,0 +1,50 @@
+import { useEffect, type ReactNode } from 'react';
+
+interface ModalProps {
+  open: boolean;
+  title: string;
+  onClose: () => void;
+  children: ReactNode;
+  wide?: boolean;
+}
+
+export function Modal({ open, title, onClose, children, wide }: ModalProps) {
+  useEffect(() => {
+    if (!open) return;
+    const onKey = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') onClose();
+    };
+    window.addEventListener('keydown', onKey);
+    return () => window.removeEventListener('keydown', onKey);
+  }, [open, onClose]);
+
+  if (!open) return null;
+
+  return (
+    <div className="fixed inset-0 z-50 flex items-center justify-center p-4">
+      <button
+        type="button"
+        className="absolute inset-0 bg-black/60"
+        aria-label="Cerrar modal"
+        onClick={onClose}
+      />
+      <div
+        className={`relative z-10 max-h-[90vh] w-full overflow-y-auto rounded-xl border border-surface-border bg-surface-raised shadow-2xl ${
+          wide ? 'max-w-2xl' : 'max-w-lg'
+        }`}
+      >
+        <div className="flex items-center justify-between border-b border-surface-border px-5 py-4">
+          <h2 className="text-lg font-semibold text-white">{title}</h2>
+          <button
+            type="button"
+            onClick={onClose}
+            className="rounded p-1 text-slate-400 hover:bg-surface-border hover:text-white"
+          >
+            ×
+          </button>
+        </div>
+        <div className="p-5">{children}</div>
+      </div>
+    </div>
+  );
+}