Publish docker image to dockerhub to lower the barrier to entry

[kblief]

Question/Issue Overview

Docker image should be published to dockerhub to lower the barrier to usage

Expected Behavior

Docker image should be published to DockerHub

Current Behavior

Docker image is published to private docker repo on bintray

Additional Information

Dockerhub is the defacto standard for pulling docker images. As tools like testcontainers are becoming for popular, adding an additional hurdle, like a private docker repo, will reduce the adoption.