Cross-build arm64 container

Open bgilbert opened this issue 3 years ago • 0 comments

The arm64 container currently builds in an emulated arm64 host via qemu-user. It would be much more efficient to cross-build from amd64 by having the Dockerfile specify FROM --platform=$BUILDPLATFORM for the builder container and set GOARCH=$TARGETARCH. However, Buildah < 1.24.1 doesn't support --platform in FROM. Once a new enough Buildah has landed in ubuntu-latest, switch to cross-building, and re-enable arm64 container builds in PRs by dropping the pr-arches override.

Followup to #31. See also https://github.com/coreos/butane/issues/334.

Jun 17 '22 01:06 bgilbert