Dockerfiles can be used to extend base images for buildpacks builds
The Cloud Native Buildpacks project aims to create “Reproducible Builds” of container images. For image creation commands (builder create, buildpack package, build) pack creates container images in a reproducible fashion. “Reproducible” is hard to define but we’ll do so by example and with a few caveats:
A Software Bill-of-Materials (SBoM) gives you a layer-by-layer view of what’s inside your container in a variety of formats.