dind-sample.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: dind-sample
data:
  Dockerfile: |
    FROM alpine
    RUN apk update --no-cache && apk add --no-cache bash

  run.sh: |
    #!/bin/sh
    for i in $(seq 1 50); do
      echo "### begin step ${i} ###"
      docker build --no-cache --rm .
      echo "### end step ${i} ###"
    done
---
apiVersion: v1
kind: Pod
metadata:
  name: dind-sample
spec:
  containers:
    - name: dind
      image: docker:dind
      command:
        - dockerd-entrypoint.sh
        - --storage-driver=overlay2
        - --experimental
      securityContext:
        privileged: true
    - name: runner
      image: docker:stable
      command:
        - ./run.sh
      securityContext:
        privileged: true
      workingDir: /opt
      env:
        - name: DOCKER_HOST
          value: tcp://localhost:2375
      volumeMounts:
        - name: files
          mountPath: /opt
  restartPolicy: Never
  volumes:
    - name: files
      configMap:
        defaultMode: 0777
        name: dind-sample

useful-commands.sh

kubectl apply -f dind-sample.yaml
kubectl describe pod dind-sample
kubectl logs dind-sample -c runner
kubectl delete pod dind-sample
kubectl delete configmap dind-sample