Small script to find which tag is the real latest one

which_tag_is_latest.sh

#!/bin/bash

IMAGE="registry.opensuse.org/opensuse/busybox"
OS="linux"
ARCH="amd64"

PLATFORM="${OS}/${ARCH}"

LATEST=$(crane digest ${IMAGE}:latest --platform ${PLATFORM})

TAGS=$(crane ls ${IMAGE} | grep -v latest)

for tag in ${TAGS}; do
  DIGEST=$(crane digest ${IMAGE}:${tag} --platform ${PLATFORM} 2> /dev/null)
  if [[ ${DIGEST} == ${LATEST} ]]; then
    echo "latest=${tag}"
  fi
done