Docker Container Build and Run setup with foundations for adding docker integration tests. Docker images built with Hadoop 2.8.4 Hive 2.3.3 and Spark 2.3.1 and published to docker-hub

Look at quickstart document for how to setup docker and run demo

docker/hoodie/hadoop/datanode/run_dn.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+datadir=`echo $HDFS_CONF_dfs_datanode_data_dir | perl -pe 's#file://##'`
+if [ ! -d $datadir ]; then
+  echo "Datanode data directory not found: $datadir"
+  exit 2
+fi
+
+$HADOOP_PREFIX/bin/hdfs --config $HADOOP_CONF_DIR datanode