- Upgrade Ubuntu version to 22.04
- Make custom build args for TensorRT and CUDNN versions,
user-specifiable in a.b.c version format
- Make build args required, without defaults, to improve code
cleanliness and reduce amount of changes needed when versions shift
- Provide clear error messages when the build args are not provided by
the user
- Add documentation of the change in the Docker README

- Add support for pyenv in Docker file, allowing specification of a
custom Python version
- Update WORKSPACE files to automatically synchronize regardless of
Python version choice, using symbolic links
- Update dependencies accordingly
- Add documentation for changing the base image of the Docker container

- Add documentation regarding Python versioning