Home page for the entire suite (in French) with some screenshots: https://lasuite.numerique.gouv.fr/
Code bases are on GitHub and they use English there: https://github.com/suitenumerique/
Dev handbook (in English): https://suitenumerique.gitbook.io/handbook
Not French and I can't say I personally tried deploying any of them, but I've been admiring their efforts from afar for a while now.
I did try a local installation of Docs when i first saw the project a few months ago (i do not remember if it was posted here or on Reddit, though i think one of the developers posted in the comments wherever i saw it), it seems fine though it did feel a bit sparse for all the docker containers it expected from me to setup. I guess for an organization this might be ok, but it did feel a bit overengineered, especially since the actual functionality doesn't seem to be much (and the core editor isn't even written by them).