docker中运行apachekylin/apache-kylin-standalone:5.0.0-alpha镜像时kylin启动失败的解决方法

镜像说明：docker hub的

apachekylin/apache-kylin-standalone:5.0.0-alpha

DIGEST:sha256:88006c9ca4880a4cc9908577cd865ca5e5d2583f1e29e3f692902e893ab31507

按以下步骤修改即可成功启动kylin 5.0.0-alpha！！！

先按docker hub说明用docker run用镜像启动容器，然后用"docker exec -it 容器id bash "进入容器交互式做如下修改：

一、调整/home/kylin/apache-kylin-5.0.0-alpha-bin/sbin/prepare-hadoop-conf-dir.sh  
 在154行前增加：
           checkAndCopyFile $HADOOP_CONF ${mysql_connector_jar_dir}

  【对应解决/home/kylin/apache-kylin-5.0.0-alpha-bin/logs/kylin-verbose.log中提示的错误：
Missing hadoop conf files. Please contact Community support for more details.
】 

二、调整/home/kylin/apache-kylin-5.0.0-alpha-bin/sbin/download-spark-user.sh
1、44和45行调整为
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