Docker images actually contain the timestamp each layer was built at, so are basically de-facto non-reproducible. Buildah from Red Hat has an argument to set t

Docker images actually contain the timestamp each layer was built at, so are basically de-facto non-reproducible. Buildah from Red Hat has an argument to set this programmatically instead of using the current date, but AFAIK there's no way to do that with plain old docker build.