Build stage
A build stage is a phase or unit of a build process that processes inputs to prepare or produce outputs for later stages or deployment.
Learn Docker in a Month of Lunches, Second Edition
A builder stage is a Dockerfile build stage that contains the tools and source files needed to compile an application.
- How it is used
- Uses a build stage to compile source inside Docker while keeping build tools out of the final application image.
- How deep it goes
- Works through stage naming, RUN and COPY --from, then shows Go and .NET Framework build configurations.
- Examples
- Shows a file passed between stages, a Go web server build and a .NET Framework application build.
- What you can do after
- Build it from scratch using a multi-stage Dockerfile that compiles in one image and packages output in another.
Read how Learn Docker in a Month of Lunches, Second Edition explains build stage →
Quarkus in Action
A build step is a Quarkus extension processing unit that consumes and produces build items during the application build.
- How it is used
- Uses build-time processing to connect Quarkus extension logic with generated application behavior.
- How deep it goes
- Explains annotations, inputs, outputs, recorders, execution phases, and integration examples without detailing the complete build-item catalog.
- Examples
- Demonstrates metadata JSON construction, dependency scanning, recorder invocation, HTTP route registration, CDI registration, and request filtering.
- What you can do after
- Build it from scratch by writing a processor method that consumes build items, records runtime logic, and produces extension integration items.
Related concepts
- build itemproduces · A build item is a typed object exchanged between Quarkus build steps to communicate build-time data and actions.
- OTP releaseproduces · An OTP release is a self-contained package of an Erlang or Elixir application together with the runtime components and configuration needed to run it.
- build processorpart of · A Quarkus build processor is a deployment-module class that declares build steps for augmenting an application during the build.
- multistage buildused by · A multistage build is a container-image construction technique that uses separate build stages and includes only selected artifacts in the final runtime image.
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