wangyang0918 commented on pull request #49:
URL: https://github.com/apache/flink-docker/pull/49#issuecomment-748475375


   @tianon Thanks for your comments. We not only set the environments in `run` 
command, but also could support "disable jemalloc", "copy plugins" and other 
preparatory works in the future. For normal commands, we do not need this.
   
   Maybe I do not give a good example in the PR description. Actually, we do 
not always need  a shell script to use these variables. For example, we could 
have the following typical commands. 
   ```
   docker run flink:1.12.0-debug run flink run -h
   docker run flink:1.12.0-debug run java -classpath '$FLINK_CLASSPATH' ... 
org.apache.flink.kubernetes.entrypoint.KubernetesApplicationClusterEntrypoint 
...
   ```


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