HADOOP-17678. Add Dockerfile for Centos 7 (#2967)
HADOOP-17678. Add Dockerfile for Centos 7 (#2967)


mapr/hadoop-common,mapr/hadoop-common,JingchengDu/hadoop,wwjiang007/hadoop,JingchengDu/hadoop,mapr/hadoop-common,nandakumar131/hadoop,apurtell/hadoop,apache/hadoop,nandakumar131/hadoop,wwjiang007/hadoop,nandakumar131/hadoop,JingchengDu/hadoop,wwjiang007/hadoop,apache/hadoop,wwjiang007/hadoop,apache/hadoop,apache/hadoop,mapr/hadoop-common,JingchengDu/hadoop,mapr/hadoop-common,nandakumar131/hadoop,wwjiang007/hadoop,wwjiang007/hadoop,nandakumar131/hadoop,JingchengDu/hadoop,apache/hadoop,apache/hadoop,apurtell/hadoop,apurtell/hadoop,apurtell/hadoop,JingchengDu/hadoop,apurtell/hadoop,apache/hadoop,JingchengDu/hadoop,nandakumar131/hadoop,mapr/hadoop-common,apurtell/hadoop,nandakumar131/hadoop,mapr/hadoop-common,apurtell/hadoop,wwjiang007/hadoop