Add github actions workflows

[k-nasa]

background

close: #246

[ghost]

Did you see the install-mdbook script? That way saves quite a bit of time compared to the cargo install mdbook.

However, the script is fragile because it ultimately relies on a specific release filename pattern and it would be nice if we could have a more general solution. (This is currently an issue for another CI related PR here).

I think a better way might be to create a docker image based on the official image (or slim or docs.rs) with all of the tools we need (deadlinks, mdbook, tarpaulin?) pre-installed. Then we could use the container.image setting to set the environment so that stuff is available without having to rebuild it.

Another github action could handle docker image related tasks.

[yoshuawuyts]

I agree this would be really nice, and it would probably worth doing this in a follow-up!

Perhaps it's worth opening an issue for this on https://github.com/actions-rs/meta/issues also; I agree that having a general solution for this would probably be very valuable to a lot of people.

[skade]

cargo install mdbook should be avoided, it adds ~8 min of build time.

[k-nasa]

Wow, long. I will fix it tonight, so take a moment

[yoshuawuyts]

This looks good to me; I think we should merge this and run it together with Travis for a little bit to see how it works out. If it turns out it works well we can migrate entirely by turning off Travis.

Thanks heaps!

[yoshuawuyts]

bors r+

[skade]

Bors seems to hang.

[k-nasa]

I fixed install mdbook. Please re-review 🙇

[skade]

bors r+

[skade]

Bors breaks on this. I'll merge it in good faith to test.