Adding support for Raspberry Pi images

I wanted to enquire if it is possible to add support for container images using Raspberry Pi.

I was trying to setup GitHub Codespaces to try and run a RPi 3 environment to try out ARM Assembly code, and there currently isn't any straightforward way to run a ARM Assembly environment.
Here is the repository I'm currently working this on, any suggestions would be helpful
https://github.com/cr2007/F28HS-RPi-Env/

The closest thing I could find was this repository called [dockerpi](https://github.com/lukechilds/dockerpi) by @lukechilds, which is a virtualised version of the same.

But there seems to be some issues when setting this up in GitHub Codespaces.
Either the build fails, or there is some general issues when building the VM.

Is there any plans for supporting Raspberry Pi OS as an option to build in the near future?

Any suggestions/input would be greatly appreciated.