merge HARDENS "classic" docker image with Simon's new docker image and publish to DockerHub

[kiniry]

The NRC wants to ensure that a complete docker image is published for the project to guarantee reproducibility of the case study and report. I suggest the shortest path to doing so is performing the work summarized in the title of this issue. I'd like this done before our final presentation to the NRC, which is on 12 October.

[kiniry]

I have put in the request to IT to add @SimplisticCode to Galois's DockerHub.

[podhrmic]

The related PR is here: #123

[kiniry]

I have requested a hardens repository on DockerHub from Galois IT so we can push images there. I have temporarily pushed the current image to my personal DockerHub namespace.