I pushed the Hadoop docker image apache/hadoop:3.4.2 to dockerhub https://hub.docker.com/repository/docker/apache/hadoop/tags/3.4.2/sha256-0f79c18d27a2b15984868a41e245b09c98daa5638b573b4dbd848be650f05635
apache/hadoop3.4 also maps to the same image. I also added a docker build rule to trigger an automated build whenever a commit is merged to any docker-hadoop-* branches. 1. HDFS-17866 <https://issues.apache.org/jira/browse/HDFS-17866> Best Regards, Weichiu
