Hi,
could you describe how to replicate the build of Debian for the Rubik Pi3?
Did you use debootstrap?
Would it be possible to write the guide like there exists one for Yocto?
Dear customer
The current RubikPi Debian version is not open-source. We plan to release a new version of Debian in early June, and will simultaneously open-source the Linux kernel code and user-manual. Please stay tuned for further information. 
Glad to here that.
So the Debian is not using this kernel you publish on the github?
Also since it’s embedded board have you considered Armbian?
I have discussed with our dev team about this, and they are quite interested in Armbian.
Therefore, it is highly likely that a related version may be released in the future; however, this is still a preliminary idea, and we are unable to provide a release schedule now.