Backup SonarQube Posgres DB to NFS share

k8s-backup-SonarQube.yml

apiVersion: batch/v1
# apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: sonar-postgres-backup
spec:
  # schedule: "0 2 * * *"
  schedule: "@daily"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: sonar-postgres-backup
            # image: bitnami/postgresql:latest # Getting error: /bin/sh: 1: cannot create /root/.pgpass: Permission denied
            image: postgres:latest
            # File .pgpass contents: hostname:port:database:username:password
            # "-mtime n" - File's  data  was  last  modified  n*24  hours ago.
            command: 
            - /bin/sh
            - -c
            - |
              echo "sonar-postgresql:5432:postgresDB:postgresUser:$POSTGRESPASS" > /root/.pgpass && \
                chmod 600 /root/.pgpass && \
                pg_dump -h sonar-postgresql -U postgresUser postgresDB | \
                gzip > /mnt/backups/sonar-postgres-backup-$$(date "+%Y-%m-%d_%H-%M").gz && \
                find /mnt/backups -type f -mtime +7 | xargs rm -f
            env:
            - name: POSTGRESPASS
              valueFrom:
                secretKeyRef:
                  name: sonar-postgresql
                  key: postgresql-password
            volumeMounts:
            - name: nfs-share
              mountPath: /mnt/backups
          restartPolicy: Never
          volumes:
          - name: nfs-share
            nfs:  
              server: server.mydomain.loc
              path: /opt/nfs/backups/k8s-SonarQube
          # nodeSelector:
          #   kubernetes.io/os: linux
          # tolerations:
          # - key: "cattle.io/os"
          #   operator: "Exists"
          #   effect: "NoSchedule"