Adding docker

[cdeving]

Hey. Thanks for your work.

Here is a simple dockerfile implementation that builds the project using makefile and copies compiled linux binary into small alpine container.

Usage:

docker build -t local/huggingfacemodeldownloader .
docker run --rm -v ./models:/models local/huggingfacemodeldownloader download something/something -o /models

https://github.com/bodaay/HuggingFaceModelDownloader/issues/46