Code0x58 commented on a change in pull request #2975: Docker Ubuntu tweaks
URL: https://github.com/apache/incubator-heron/pull/2975#discussion_r209436020
 
 

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 File path: docker/dist/Dockerfile.dist.ubuntu16.04
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 @@ -7,7 +7,7 @@ RUN apt-get -y install software-properties-common ; apt-get 
clean all
 RUN apt-get -y install curl ; apt-get clean all
 RUN apt-get -y install supervisor; apt-get clean all
 
-RUN apt-get -y install openjdk-8-jdk; apt-get clean all
+RUN apt-get update && apt-get -y install openjdk-8-jdk-headless; apt-get clean 
all
 
 Review comment:
   Redundant `apt-get clean` as above

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