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https://issues.apache.org/jira/browse/NIFI-4057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16046045#comment-16046045
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Jordan Moore commented on NIFI-4057:
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Just want to mention, I'm already working on this, and have a resultant 1.29 GB
image.
bq. GID=50 already exists in openjdk:8 (staff). Why are we attempting to use
and rename an existing group? Just create a new group and be done with it?
Completely agree. Open to suggestions for alternative numbers.
bq. Consolidate the "Setup NiFi user" into a single layer. Combine any
groupadd, useradd, mkdir, chown statements into a single RUN layer.
Did that.
bq. Update the deprecated MAINTAINER statement with "LABEL maintainer"
Forgot about that, but will fix.
Also want to point out that {{openjdk:8}} is the JDK, whereas you only need the
JRE.
> Docker Image is twice as large as necessary
> -------------------------------------------
>
> Key: NIFI-4057
> URL: https://issues.apache.org/jira/browse/NIFI-4057
> Project: Apache NiFi
> Issue Type: Bug
> Components: Docker
> Affects Versions: 1.2.0, 1.3.0
> Reporter: Jordan Moore
> Priority: Minor
>
> By calling {{chown}} as a secondary {{RUN}} command, you effectively double
> the size of image by creating a Docker layer of the same size as the
> extracted binary.
> See GitHub discussion:
> https://github.com/apache/nifi/pull/1372#issuecomment-307592287
> *Expectation*
> The resultant Docker image should be no larger than the Base image + the size
> required by extracting the Nifi binaries.
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