This script was used to backup all schema/database postgresql version 15 to the GCP, if you want to dump older version you need to change the postgres-client-15 to the version what you want on Dockerfile

For running on your local device use docker, just run docker compose up it will automatically build local docker images

If you are running on kubernetes, just apply the manifest kubectl -n namespace -f kubernetes-postgres-backup-k8s.yml apply