skaffold init --XXenableBuildpacksInit
# or
skaffold init \
-a '{"builder":"buildpacks","payload":{"path":"leeroy-app/Dockerfile"},"image":"gcr.io/k8s-skaffold/leeroy-app"}' \
-a '{"builder":"buildpacks","payload":{"path":"leeroy-web/Dockerfile"},"image":"gcr.io/k8s-skaffold/leeroy-web","context":"path/to/context"}'