Vercel Sandbox now runs on Vercel Managed Images

Today we are introducing Vercel Managed Images (VMI), a set of versioned, open-source base images you can use as-is or extend. The source for every image lives in the public vercel/sandbox repository. Managed images replace Sandbox runtimes, which are now deprecated. Starting with version 3 of the Sandbox SDK, new sandboxes default to vercel/sandbox/universal:latest . It ships with Node.js, Python, common coding agents and standard utilities, so most users never build a custom image or install packages at boot. The universal image switches our default operating system from Amazon Linux to Ubun