Multistage build
A multistage build is a container-image construction technique that uses separate build stages and includes only selected artifacts in the final runtime image.
.NET in Action, Second Edition
A multistage build constructs an image through multiple Dockerfile build stages so that artifacts from an earlier stage can be copied into a later runtime stage.
- How it is used
- Separates application publishing from runtime execution to produce a container that starts without NuGet restore or compilation.
- How deep it goes
- Explains stages, base images, artifact copying, ports, entry points, and named-stage syntax through complete Dockerfiles.
- Examples
- Uses the AsciiArtSvc service with SDK and aspnet images, numbered and named stages, published output, port 80, and a DLL entry point.
- What you can do after
- Builds a smaller runtime-focused Docker image from a publish stage and configures it to launch the published ASP.NET Core application.
Read how .NET in Action, Second Edition explains multistage build →
Rust Servers, Services, and Apps
A multistage Docker build uses multiple Dockerfile stages so that only selected artifacts from earlier stages are included in the final image.
- How it is used
- Packages a Rust web service for deployment while reducing the final Docker image.
- How deep it goes
- Explains multiple FROM stages, named stages, artifact copying, image-size verification, runtime testing, and security and caching benefits.
- Examples
- Uses a Rust builder, Google Distroless runtime, Dockerfile-lite, a 31.8 MB image, and localhost greeting endpoints.
- What you can do after
- Build and run a smaller Rust Docker image using named stages and a runtime-only artifact.
Read how Rust Servers, Services, and Apps explains multistage build →
Related concepts
- Dockerfileuses · A Dockerfile is a text file containing declarative instructions for building a container image and specifying its contents and runtime metadata.
- container imageproduces · A container image is a packaged filesystem and configuration artifact from which a container can be created and run.
- from instructionuses · The FROM instruction is a Dockerfile directive that selects the base image or empty filesystem for a container image build stage.
- Dockerimplemented by · Docker is a platform and ecosystem for building, distributing, and running applications in containers.
- code compilationuses · Code compilation is the translation of source code or another formal representation into an executable, intermediate, or lower-level representation.
- software artifactproduces · A software artifact is a persistent work product or object produced or maintained during software development or a related workflow.
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