Question

A team builds a container image that must be published for both linux/amd64 and linux/arm64 architectures. Currently a single CodeBuild project builds each architecture sequentially inside one buildspec, which takes over 25 minutes and frequently causes the CodePipeline build stage to feel slow. The team wants both architectures built in parallel using native runners (not emulation) while keeping everything in a single CodeBuild project invocation, and they want the pipeline to wait for both to finish before proceeding. What should the DevOps engineer implement?

Accepted Answer

Configure a CodeBuild batch build using a build-matrix (or build-list) in the buildspec that runs the amd64 build on an x86 compute type and the arm64 build on an AWS Graviton compute type, and enable batch builds in the CodePipeline build action.

Answer

Enable QEMU emulation in the buildspec so the single x86 CodeBuild instance can cross-compile the arm64 image in parallel threads within the same build.

Answer

Create two separate CodeBuild projects and add two sequential CodePipeline actions with the same runOrder so they execute one after another.

Answer

Increase the CodeBuild project's compute type to the largest available instance so the sequential builds complete faster within the single project.