Find the tag of a Docker image having only the SHA256

get-docker-image-tag-by-sha.sh

#!/bin/bash

SHA256_HASH="df41d97cb66f3407c9b728b4d553e3bc6f7a2ffa7b47633aa6e2422d612a5461"

for i in {1..1000}
do
   echo "Looking into page: $i"

   curl "https://registry.hub.docker.com/v2/repositories/nginxproxy/docker-gen/tags/?page=$i" \
    | jq '.results[] | select(.["images"][]["digest"] == "sha256:'${SHA256_HASH}'")'
done