Hey all,I really liked the way of making code accessible via a repository or gist containing a bunch of notebooks together with a simple Dockerfile that has not much more than "FROM sagemath/sagemath:version" in it -- but this is something that broke down a while ago (https://github.com/sagemath/sage-binder-env/issues/9, couldn't find a trac ticket).Now, I don't speak Jupyter well enough to understand why it doesn't still work, but I've found that if, instead of using notebook from SageMath's venv, one installs Python 3 + Jupyter separately in the container and links the SageMath kernel to it, the docker images *can* still be used with mybinder. I've left details here: https://github.com/sagemath/sage-binder-env/issues/9#issuecomment-1317769194, mybinder link: https://mybinder.org/v2/gist/behackl/a5d25c901ec557565f99331b130f09a2/HEAD.