[throwaway10122]

One main use for Docker we have is running integration tests on local docker compose containers and/or using testcontainers library

Can rancher solve this usecase?

[shelajev]

I don't think it runs Docker. You can run minikube and use it for Docker workloads, which should work with testcontainers.

https://minikube.sigs.k8s.io/docs/commands/docker-env/