Nixpacks CLI
The Nixpacks command-line interface is the primary interface for generating build plans and producing Docker images from application source. Core commands include `nixpacks plan` (emit the JSON build plan that would be used), `nixpacks build` (produce an OCI image via Docker BuildKit), and `nixpacks detect` (identify which providers match the source directory). The CLI accepts inline overrides for install, build, and start commands, Nix and apt packages, environment variables, the base build image, and a separate runtime image, and is distributed as a single Rust binary via Homebrew, install script, Docker image, and GitHub releases.