diff --git a/Dockerfile b/Dockerfile
index 8735c34..3456eea 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,7 @@ COPY shell/* /app/
 RUN ln -s /app/* /usr/local/bin/ && chmod +x /app/*
 #启用 openresty 仓库
 COPY admin@openresty.com-5ea678a6.rsa.pub /etc/apk/keys/admin@openresty.com-5ea678a6.rsa.pub
-RUN echo "http://openresty.org/package/alpine/v`echo $VERSION_ID | sed 's/\.[0-9]\+$//'`/main" \
+RUN echo "http://openresty.org/package/alpine/v3.12/main" \
 | tee -a /etc/apk/repositories
 #使用阿里云镜像源安装git openssh curl openresty
 RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories && apk update && apk add git openssh curl openresty