diff --git a/docker/nginx/Dockerfile b/docker/nginx/Dockerfile
old mode 100755
new mode 100644
index 3f5e2d1..c79b05b
--- a/docker/nginx/Dockerfile
+++ b/docker/nginx/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:latest as builder
+FROM alpine:3.18.3 as builder
 
 ENV CC=/usr/bin/clang
 ENV CXX=/usr/bin/clang++