GCS_BUCKET=${GCS_BUCKET:-istio-build/dev}

# Enable emulation required for cross compiling a few images (VMs)
docker run --rm --privileged "${DOCKER_HUB}/qemu-user-static" --reset -p yes
export ISTIO_DOCKER_QEMU=true

# Use a pinned version in case breaking changes are needed
BUILDER_SHA=159efd4a18a7325192c4f7cb0acbe5648bfb8658

# Reference to the next minor version of Istio
# This will create a version like 1.4-alpha.sha

	builder := DockerBuilder
	if b, f := os.LookupEnv("ISTIO_DOCKER_BUILDER"); f {
		builder = b
	}

	// TODO: consider automatically detecting Qemu support
	qemu := false
	if b, f := os.LookupEnv("ISTIO_DOCKER_QEMU"); f {
		q, err := strconv.ParseBool(b)
		if err == nil {
			qemu = q
		}
	}

	return Args{
		Push:              false,
		Save:              false,
		NoCache:           false,