Why not archive this repo to make it readonly?

[hitzhangjie]

If this repo is deprecated. I suggest make it archived to let others stop posting new issues or merge requests.

That wastes time of other contributors and users.

[hitzhangjie]

I have built a docker image, if anyone need this, please see:

• the docker image: hitzhangjie/gitbook-cli:latest
• the dockerfile: hitzhangjie/docker-gitbook