Github user ottobackwards commented on the issue:
https://github.com/apache/metron-bro-plugin-kafka/pull/21
The idea, at least at this point is that when in the container you will
have the 'built in scripts' that we have, and whatever scripts you have mapped
into the container too. the run_test.sh.template currently doesn't pass
through the script dir parameter, I have to build it out at that top level.
So this will allow the user to write their own test scripts, maintained
outside the code etc.
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