Docker
Multi-stage build
Quick answer
A multi-stage build uses several FROM instructions so build-time tooling stays out of the final image.
A multi-stage build uses several FROM instructions so build-time tooling stays out of the final image.
Why it matters
It reduces image size and attack surface at the same time. The compiler that built your binary has no business shipping to production alongside it.
Your next build could be twice as fast, at half the price
Start free. Migrating away is the same one line, and we publish that diff too.
Related
Base imageA base image is the image named in a Dockerfile's FROM instruction, providing the filesystem and tooling every subsequent layer builds on.BuildKitBuildKit is Docker's build engine, providing parallel layer execution, better caching and support for build secrets and multi-platform output.BuildxBuildx is the Docker CLI plugin that exposes BuildKit features, including multi-platform builds, remote builders and advanced cache backends.Cache mountA cache mount is a BuildKit feature that persists a directory across builds without including it in the resulting image layer.