RunZero is an intelligent, autoscaling local GitHub Actions runner fleet featuring Dual-Engine execution (Docker containers & dedicated Linux VMs via OrbStack, WSL2, and Multipass), multi-arch Apple Silicon/x86 support, and persistent proxy caching.
RunZero enables seamless switching between ultra-fast Docker containers (~0.3s startup, ~20MB RAM) for standard CI workflows and dedicated Linux VMs with systemd support for headless Chrome, Lighthouse audits, and background daemons.
Integrated proxy registries for APT, NPM (Verdaccio), and Go (Athens) drastically reduce CI execution times and external bandwidth. Intelligent hybrid auto-routing directs jobs to the optimal backend engine.
Docker, OrbStack, GitHub Actions, Linux, systemd, Verdaccio, Athens, Astro, TypeScript