[falsedan]

We tried docker, then had to drop back to running the tests outside of a container (some old technical decisions in the project under test made it hard to run in a container). It's been improved since then, and we're close to running in containers again.

Each executor gets a non-shared prod-like environment thanks to a handful of docker containers. The same setup is used for dev, so switching the testing environment to LXC would mean switching devs as well.