use kubectl init container to wait for job to complete before unblocking the actual pod

wait-for-job.yaml

---
apiVersion: batch/v1
kind: Job
metadata:
  name: myjob
spec:
  ttlSecondsAfterFinished: 10
  template:
    spec:
      containers:
        - name: sleeper
          image: busybox
          command: ["sleep", "30"]
      restartPolicy: Never
---
apiVersion: v1
kind: Pod
metadata:
  name: myapp
  labels:
    name: myapp
spec:
  initContainers:
    - name: wait-for-job
      image: bitnami/kubectl
      args:
        - wait
        - job.batch/myjob
        - --for
        - condition=complete
        - --timeout
        - 60s
  containers:
    - name: myapp
      image: nginx
      ports:
        - containerPort: 80
      resources: {}