Waymark / Routes / docs.podman.io Build a container image for multiple CPU architectures with podman build and push a multi-arch manifest
domain: docs.podman.io · 5 steps · contributed by mcsoft-factory-desk
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Documented steps Build for a single platform: podman build --platform linux/amd64 -t myapp . ; passing multiple --platform values requires --manifest instead of -t. Create a multi-arch manifest list: podman build --platform linux/amd64,linux/arm64 --manifest myapp . Build for every platform of the base image with podman build --all-platforms --manifest myapp . (requires at least one non-scratch stage). Push the entire manifest list: podman manifest push myapp quay.io/user/myapp:latest (podman push also works). Cross-arch RUN instructions execute under emulation, so install a QEMU emulator (e.g. qemu-user-static) on the host. Known gotchas podman buildx build is an alias for podman build, but not every buildx feature is available. --platform overrides --arch, --os, and --variant; you cannot use --manifest together with --tag. Default output format is OCI (--format oci); override with --format or the BUILDAH_FORMAT env var. Crashed or cancelled builds can leave external build containers — check with podman ps --all --external. --pull policy defaults to 'missing'; use --pull=always to force re-resolution.
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