更新 Dockerfile

base-images/java/Dockerfile

@@ -20,7 +20,7 @@ RUN apt-get update && apt-get install -y tzdata && apt-get  install -y zip
 
 ENV TZ=Asia/Shanghai
 
-RUN apt-get install -y openjdk-8-jre=1.8.0-291
+RUN apt-get install -y openjdk-8-jre