Docker demo

[NielsZeilemaker]

I created a docker-compose to more easily try out storagetapper. It's based on scripts/workflow_example.sh. As this is my first try to get storagetapper up and working, it might contain some beginner mistakes.

[CLAassistant]

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[NielsZeilemaker]

One such example of a beginner "mistake" is removing the hdfs pipe, as I did not want to add hdfs to the docker-compose. I there another method to disable the hfds pipe?