check-k8s-images.sh

#!/bin/bash -u

k8s_context=$1

# https://kubernetes.io/docs/tasks/access-application-cluster/list-all-running-container-images/
images=$(kubectl --context $1 get pods --all-namespaces -o jsonpath="{.items[*].spec['initContainers', 'containers'][*].image}" \
  | tr -s '[[:space:]]' '\n' \
  | sort \
  | uniq)

for image in $images; do
  crane manifest "$image" > /dev/null 2>&1 && echo "$image: OK" || echo "$image: ERROR"
done