diff --git a/Dockerfile b/Dockerfile
old mode 100644
new mode 100755
index a1770e6..7f6502f
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,7 @@
 FROM ubuntu:24.04
 
+ENV TZ='Asia/Tokyo'
+
 RUN apt update && apt install -y wget
 
 WORKDIR /tmp