Docker - jekyll/jekyll Container

Hello, how can i start the Jekyll Container?

https://hub.docker.com/r/jekyll/jekyll

What is the right input?

I have done:

docker pull jekyll/jekyll

Where can i find the the Dockerfile?

https://github.com/envygeeks/jekyll-docker/blob/master/README.md

Can you please help me?

steveng