Docker

Port Numbers Are a Lie. Here’s the Truth.

You’ve probably wasted hours debugging a broken local environment, only to find your frontend talking to the wrong backend. Port numbers are a brittle, legacy abstraction. PortZero exposes the truth: ports are just a convenience proxy for process identity, and it’s time we replaced them with a naming-based approach.

The AI Coding Agent That Won’t Betray You (It’s Open Source)

Most AI coding agents leak your data or run wild on your system. Claw-coder is the first local agent that solves both: sandboxed Docker execution, local RAG, and a knowledge graph โ€” all without sacrificing power. The real moat isn’t the model; it’s the orchestration layer that guarantees safety and privacy.

I Spent a Few Hours Building a Container Network from Scratch. Here’s What Happened.

I built a container network from scratch using Linux bridges, veth pairs, and iptables. What I discovered is that Docker’s ‘simple’ bridge network is actually a miniature software-defined networkโ€”same concepts, same scaling challenges. Understanding this fundamental layer empowers you to debug, secure, and optimize container traffic in production.