That's not a solution. This requires you to expose those host docker socket mounted into a guest container, which breaks some security mechanisms by preventing

That's not a solution. This requires you to expose those host docker socket mounted into a guest container, which breaks some security mechanisms by preventing isolation from the host systems. Which also does not work on k8s. It does work in docker compose, but also isn't portable to places where the docker socket isn't available, eg hosted pipelines. Test containers seem to work well if you're not already properly using containers in your pipelines, and are not interested in deployment to k8s.