Repo2docker base image for empty repository?

Hi all,

is there somewhere a Docker image being maintained that would come out of repo2docker being run on an empty repository (or maybe one where environment.yml contained jupyter lab as only dependency)? The idea is to save time (and space) when installing different conda environments, such that I could do something like

FROM base-image
RUN mamba install ...

each time my specs change instead of starting with repo2docker every time.

If not that’s no problem, I’ll make my own, but I thought I’d ask.

Thanks in advance!

PS: Apologies if this has been asked before - I couldn’t find this with the search terms I could think of.