Github user apiri commented on the issue:
https://github.com/apache/nifi/pull/1884
Hey @evaldasou,
That is anticipated. Given the mechanics of the release process, the image
will not be available until the release fully completes. If you would like to
build something now, locally, you can make use of the Docker Maven path to
build an image available in the source tree at
https://github.com/apache/nifi/tree/master/nifi-docker/dockermaven
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