Docker compose for testing

[jeqo]

In order to test the site without installing Ruby dependencies, a docker-compose configuration is provided to make this easier.

[abesto]

Looks legit, thanks for updating the dependencies as well!

https://github.com/envygeeks/jekyll-docker/blob/master/README.md#dependencies confirms the Docker container correctly updates dependencies to whatever we have in Gemfile.lock, so that's great.

We might possibly save some build time / headaches by specifying the Docker tag corresponding to the version of Jekyll we're using (via https://pages.github.com/versions.json), but then that needs to be regularly maintained. Or a wrapper script needs to parse that JSON and somehow pass it in (Compose does ENV interpolation on the image name, right?) Either way, that's a lot of thinking for very little gain, so whatevs.

👍

[codefromthecrypt]

thank ye