Explore options to package Kafka Tutorials `harness-runner` as a docker image

Make it easier to install/run harness-runner: "Also, if I remember correctly the harness runner requires to install some python dependencies, maybe it can be packaged as a docker image to avoid having to deal with that?"

This issue tracks to sub-task three on the umbrella Github issue -https://github.com/confluentinc/kafka-tutorials/issues/386