Gitlab docker runner for Kubernetes

gitlab-docker-runner.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: gitlab-runner-docker
data:
  config.toml: |
    concurrent = 1
    check_interval = 0
    [[runners]]
      name = "docker"
      url = "https://gitlab.example.org/"
      token = "8a71da9ea917a91d4868e65caf9f3c"
      executor = "docker"
      [runners.docker]
        tls_verify = false
        image = "docker:stable"
        privileged = true
        disable_cache = false
        volumes = ["/cache", "/var/run/docker.sock:/var/run/docker.sock"]
        shm_size = 0
        network_mode = "host"
      [runners.cache]

---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: gitlab-runner-docker
spec:
  replicas: 1
  serviceName: gitlab-runner-docker
  selector:
    matchLabels:
      name: gitlab-runner
  template:
    metadata:
      labels:
        name: gitlab-runner
    spec:
      containers:
      - name: docker
        args: [ "-H", "0.0.0.0:3275" ]
        image: docker:dind
        securityContext:
          privileged: true
        volumeMounts:
        - mountPath: /var/lib/docker
          name: docker-data
      - name: gitlab-runner
        args:
        - run
        env:
          - name: DOCKER_HOST
            value: "tcp://0.0.0.0:2375"
        image: gitlab/gitlab-runner:latest
        imagePullPolicy: Always
        volumeMounts:
        - mountPath: /etc/gitlab-runner
          name: config
      restartPolicy: Always
      volumes:
      - configMap:
          name: gitlab-runner-docker
        name: config
      - hostPath:
          path: /data/local/data/gitlab-runner-docker
        name: docker-data