I want repo:tag@digest from every layer in non-colliding values!

Dockerfile

ARG IMAGE=fedora
ARG IMAGE_TAG=29

FROM ${IMAGE}:${IMAGE_TAG}

LABEL com.hashbangbash.image=${IMAGE}:${IMAGE_TAG}@${DIGEST}
LABEL com.hashbangbash.image.repo=${IMAGE}
LABEL com.hashbangbash.image.tag=${IMAGE_TAG}
LABEL com.hashbangbash.image.digest=${DIGEST}

RUN dnf update -y --refresh && \
    dnf install -y bip && \
    dnf clean all

Makefile

OUTPUT  ?= $(USER)/bip
CTR     ?= podman
IMAGE   ?= fedora
TAG     ?= 29

.PHONY: image
image: .digest
        $(CTR) build \
                --build-arg "IMAGE=$(IMAGE)" \
                --build-arg "IMAGE_TAG=$(TAG)" \
                --build-arg "DIGEST=$(shell cat .digest)" \
                -t $(OUTPUT) \
                .

pull:
        $(CTR) pull $(IMAGE):$(TAG)

.digest: pull
        $(CTR) images --digests --format "{{.Digest}}" $(IMAGE):$(TAG) | head -1 | tee $@