Container Plumbing Days 2025

As ARM adoption grows for cloud-native workloads, thanks to its efficiency and cost advantages, multi-architecture container support is becoming a must-have, not a nice-to-have. But cross-arch builds come with their quirks: emulation headaches, manifest missteps, and pipeline slowdowns.

In this talk, Aditya and Anshika walk you through a CNCF-aligned, open source workflow to automate multi-arch builds using BuildKit, Kaniko, and Skopeo, producing reproducible, OCI-compliant images for both ARM and x86_64. They'll cover everything from base image strategy to manifest creation, registry publishing, and even image signing with cosign.

What you’ll learn:

1. How to configure and run multi-arch builds using open source tools like Kaniko and BuildKit.
2. Use Skopeo to inspect, sync, and validate multi-arch manifests.
3. Sign and verify images with cosign for trusted distribution.

By the end, you’ll have a solid, cloud-native blueprint to build once, run anywhere—from cloud to edge, x86 to ARM.