Build the book on CI

[lqd]

Try to build the mdbook on CI and autodeploy it from there

[lqd]

According to the doc this should be how it's done, what do you think @pietroalbini ? :)

[pietroalbini]

We have a different deployment code for the rust-lang org. You need to replace the deploy: block with:

env:
  RUSTINFRA_DEPLOY_DIR: book/book
import:
  - rust-lang/simpleinfra/travis-configs/static-websites.yml

[lqd]

Ah thank you, I thought it was somewhat specific to hugo (as in the compiler-team repo), or at the very least unrelated to mdbook deployments since the set-up seemed different at first glance in the rustc-guide repo.

I'll change this ASAP.

[pietroalbini]

That piece of infra is relatively new, so it's not surprising most of our repositories don't use it.

[lqd]

Thanks a lot for the help @pietroalbini !

I guess it's time to ... try ? :)