Docker file is out of date - v3.1.1 instead of 3.4.5

[Germs2004]

Please update the Docker image in this repository (currently version 3.1.1) to be in sync with the primary repo, which is at version 3.4.5. It would be great if the Docker images were always kept in sync with the primary repo. You could even have a "release" and "dev" branch Docker image so we can choose the appropriate image.
Thank you!