When running docker build in clamp/src/main/docker/elasticsearch there is an exception thrown on the instruction
RUN elasticsearch-plugin install --batch com.floragunn:search-guard-6:6.6.2-25.1
in Dockerfile:
_java.io.IOException: Server returned HTTP response code: 403 for URL: https://repo1.maven.org/maven2/com/floragunn/search-guard-6/6.6.2-25.1/search-guard-6-6.6.2-25.1.zip_

In deed when you try to call this page: https://repo1.maven.org/maven2/com/floragunn/search-guard-6/6.6.2-25.1/search-guard-6-6.6.2-25.1.zip
this info is being presented:
Error 403 Forbidden
Access to this content has been restricted. See https://central.sonatype.org/articles/2019/Sep/11/dmca-notice/ for further details.
It seems that there used to be access to this file BUT later on it has been stopped.
I think this Dockerfile is no longer valid and needs to be changed.