Add GH Action for CI

[0xTim]

First steps for adopting GH actions with an action to run on PRs to make sure the site works. This runs:

• the soundness script (which has already picked up an error)
• jekyll build
• The OpenAPI test client to ensure the OpenAPI spec works (cc @czechboy0)

@shahmishal can we can actions enabled? I don't know what the original CI was doing, I'm assuming just a Jekyll build

[czechboy0]

Thanks @0xTim! 🙏

[czechboy0]

If we want to test that the JSON files backing the API actually still work, we'll need to start the jekyll server locally, and then tell the test CLI to fetch from that.

This might require installing Swift in the container based on the jekyll image, here in the pipeline. Or install jekyll into the Swift one.

[0xTim]

Ahh ok. I've updated it so that we build the container and run that - also helps us test the container image is valid.

Since the default runner has Swift installed and Docker we shouldn't need to run it in a container

[shahmishal]

Thanks

[czechboy0]

And SWIFTORG_SERVER_NAME=local is the other one

[0xTim]

Just beat you 😉

[czechboy0]

Nvm you were faster and already did it 🫡

[czechboy0]

Not sure if the evolution API (downloads.swift.org) runs on the local jekyll server, actually.

[0xTim]

Ah yeah good point. Will remove that check for now

[0xTim]

@shahmishal can you remove the required mark for the old website build and switch it to the new one then merge?