I built an OCI container runtime in Python(for fun)

What it does

Puncker-rt is an educational, OCI-compliant container runtime written in pure Python. It is designed to replace runc in the Docker stack to demonstrate exactly how containers work under the hood. It uses ctypes to interact directly with Linux system calls ( unshare , mount , pivot_root , execve ), making the "black magic" of containerization readable and understandable. Goal: Just to learn how Docker works under the hood, and to have fun ofc! Puncker implements the OCI Runtime Specification . It acts as a translation layer between a JSON configuration and the Linux Kernel. Unlike high-level libraries, Puncker talks directly to the kernel. Here are the core concepts implemented in this repo:…from github.com

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