diff --git a/oci/prometheus/Dockerfile b/oci/prometheus/Dockerfile
index 69d9ffe..c095cbd 100644
--- a/oci/prometheus/Dockerfile
+++ b/oci/prometheus/Dockerfile
@@ -1,6 +1,6 @@
 FROM quay.io/prometheus/prometheus:v2.48.1
 
-cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
+COPY /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
 
 USER       nobody
 EXPOSE     9090