#!/usr/bin/env nix-shell
#! nix-shell -i bash --pure
#! nix-shell -p bash docker gnugrep coreutils

# Find the dependent child image from an image

parent="$1"

# From https://stackoverflow.com/a/41634462
for i in $(docker images -q)
do
    docker history "$i" | grep -q "$parent" && echo "$i"
done | grep -v "$parent" | sort -u