Deploy Docker image to a server

It was always intended that there be an AToMPM instance running on a public-facing server. With the creation of the Docker image, this is now possible.

Concrete tasks include:
* Ensuring the [Docker file](https://github.com/AToMPM/atompm/blob/master/packaging/docker/Dockerfile), [Docker instructions](https://github.com/AToMPM/atompm/blob/master/packaging/docker/README.md), and [GitHub workflow](https://github.com/AToMPM/atompm/blob/master/.github/workflows/make_docker.yml) are up-to-date
* Coordinating with Eugene and IT at UdeM for server access
* Coming up with a policy for rebooting the image when it crashes
* Should the image be periodically restarted, and possibly wiped? How can users be informed that this image is temporary?
* Creating a workflow for Docker container deployment on new tags/releases in the repo

Start with packaging/docker/Dockerfile, packaging/docker/README.md, and .github/workflows/make_docker.yml to understand the existing image and workflow. Then review the server-access coordination, crash-restart and temporary-instance policy, and deployment on new tags or releases. Done means a documented, maintainable deployment process is agreed and operational.

Written by the indexing model from the issue text.