Story (Required)

As a user trying to build a complex multistage Dockerfile I want to be able to define the build target in a parameter to the ClusterBuildStrategy

Background (Required)

When building a complex multistage Dockerfile, like those used with "docker buildx" it becomes necessary to be able to set the --target in buildah to specify which image to build in the Dockerfile

Out of scope

Not supporting the complexities of multi-target or multi-arch builds

Approach (Required)

Generally we should be able to add a parameter to the shipped buildah ClusterBuildStrategy to add support for --target

Acceptance Criteria (Mandatory)

A user should be able to specify the target of a multistage Dockerfile build with the buildah ClusterBuildStrategy that ships out of the box with OpenShift Builds __ 

INVEST Checklist

Dependencies identified

Blockers noted and expected delivery timelines set

Design is implementable

Acceptance criteria agreed upon

Story estimated

Legend

Unknown

Verified

Unsatisfied

Done Checklist

• Code is completed, reviewed, documented and checked in
• Unit and integration test automation have been delivered and running cleanly in continuous integration/staging/canary environment
• Continuous Delivery pipeline(s) is able to proceed with new code included
• Customer facing documentation, API docs etc. are produced/updated, reviewed and published
• Acceptance criteria are met