Configure GitHub Actions to automatically push images to DockerHub

Any push or pull request made against the master branch, should trigger an automatic build of Docker images and if the builds are successful, they should be pushed to DockerHub after being named properly (according to CPU architecture and semantic versioning).

Start by reviewing the repository's GitHub Actions configuration and the Docker image build entry points. Verify how pushes and pull requests to master should trigger builds, how CPU architecture and semantic versioning determine image names, and how successful builds are authenticated to DockerHub. Done means successful builds publish correctly named images while failed builds do not.

Written by the indexing model from the issue text.