This is a bash script, which compares the SHA of running pods (in this case on the Kubernetes stage cluster) with the SHA of the latest images with a given tag available on Dockerhub.
If the SHAs differ (i.e. release-next tag has been updated with a new image) it will delete the pod, causing our deployments/statefulsets to recreate it and pull the updated image.
Run this image as a cronjob in cluster
DONT FORGET TO ADD SECRET TO YOUR CLUSTER.