Support docker contexts

## User story

As a user I expect that `aiidalab-lauch` respects the activated [docker context](https://docs.docker.com/engine/context/working-with-contexts/) so that I can use my preferred docker runtime without work-arounds.

For example, as a Mac user you might want to use [colima](https://github.com/abiosoft/colima) as your docker runtime rather than Docker Desktop (see [here](https://jacobtomlinson.dev/posts/2022/goodbye-docker-desktop-for-mac-hello-colima/) for underlying motivation).

## Additional context

We use [docker-py](https://github.com/docker/docker-py) to interact with the docker runtime which [currently does not respect the configured context](https://github.com/docker/docker-py/issues/2616).