Building multi-arch container images with buildah
summary
Uses buildah and podman to build the same image repeatedly for different CPU architectures, pushes each image (or uses push --all to transfer blobs) and then publishes a manifest lists (image index) that lets clients pick the right manifest. Builds run on real hardware, VMs, or with qemu-user-static emulation; ARM detection is still imperfect. Demo creates multiple arch images, pushes them, runs AMD64 and ARM containers successfully, and even shows a “cursed” manifest that mixes Fedora/Debian/Alpine to prove the mechanism works (but is unsafe).
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chapters (9)
- 0:00Intro
- 0:38Overview
- 1:35Building an image
- 2:23Manifests
- 3:00Launch container
- 4:08Buildah
- 5:08Ways to build
- 6:27Demo
- 7:35Manifest List
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