diff --git a/jdk/8/Dockerfile b/jdk/8/Dockerfile
index 214be7f..0ad72aa 100644
--- a/jdk/8/Dockerfile
+++ b/jdk/8/Dockerfile
@@ -1,5 +1,9 @@
 FROM repository.anxinyun.cn/devops/alpine:3-tz-hw
 
-RUN apk add --no-cache openjdk8==8.322.06-r0; \
+ENV JDK_VERSION 8.322.06-r0
+
+ENV JDK_VERSION_MAIN 8
+
+RUN apk add --no-cache openjdk${JDK_VERSION_MAIN}==${JDK_VERSION}; \
     javac -version; \
     java -version