diff --git a/8.4/entrypoint.sh b/8.4/entrypoint.sh
new file mode 100644
index 0000000..c10679b
--- /dev/null
+++ b/8.4/entrypoint.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+set -e
+
+# www-data 권한 정리 (카페24와 유사)
+chown -R www-data:www-data /var/www/html
+
+# index.php 없으면 테스트용 생성
+if [ ! -f /var/www/html/index.php ]; then
+cat <<'EOF' > /var/www/html/index.php
+<?php
+phpinfo();
+EOF
+fi
+
+exec "$@"