kubernetes – How to run kubectl commands inside docker container cron job

1.kubectl commands giving response in container terminal and getting cluster-info.

[root@cronjob-cj-m1dr3tsda-aw5rv /]# kubectl cluster-info
Kubernetes control plane is running at https://172.20.0.1:443
CoreDNS is running at https://172.20.0.1:443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy

2.We have crontab running inside container and scheduled some job in crontab as below

*/30 * * * * root /usr/local/bin/scheduler_job.sh >> /var/log/scheduler_job.log

cat scheduler_job.sh
#!/bin/bash
whereis kubectl
kubectl version --client
kubectl cluster-info
kubectl get pods -n kube-system
kubectl rollout restart ds/scheduler-ds -n kube-system

Above kubectl commands output is empty

kubectl: /usr/local/bin/kubectl
Tue Dec 20 11:05:04 UTC 2022
WARNING: This version information is deprecated and will be replaced with the output from kubectl version --short.  Use --output=yaml|json to get the full version.
Client Version: version.Info{Major:"1", Minor:"26", GitVersion:"v1.26.0", GitCommit:"b46a3f887ca979b1a5d14fd39cb1af43e7e5d12d", GitTreeState:"clean", BuildDate:"2022-12-08T19:58:30Z", GoVersion:"go1.19.4", Compiler:"gc", Platform:"linux/amd64"}
Kustomize Version: v4.5.7

Crontab scheduled job script have kubectl commands, Its giving output as blank, please help how can we configure to get cluster access to crontab scheduled job that running inside container?