Can I use a locally built image for the runner? It keeps trying to pull the image from the registry

What would you like added?

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I want to use my custom image which i built locally. I've checked that the image exists locally using docker ps and I tried to override the imagePullPolicy in the runner-scale-set/values.yaml to Never. But it's still trying to pull images from the registry.

tail values.yaml -n 20
  ##               storageClassName: "local-path"
  ##               resources:
  ##                 requests:
  ##                   storage: 1Gi
  spec:
    containers:
      - name: runner
        imagePullPolicy: Never
        image: github-runner:latest
        command: ["/home/runner/run.sh"]

## Optional controller service account that needs to have required Role and RoleBinding
## to operate this gha-runner-scale-set installation.
## The helm chart will try to find the controller deployment and its service account at installation time.
## In case the helm chart can't find the right service account, you can explicitly pass in the following value
## to help it finish RoleBinding with the right service account.
## Note: if your controller is installed to only watch a single namespace, you have to pass these values explicitly.
# controllerServiceAccount:
#   namespace: arc-system
#   name: test-arc-gha-runner-scale-set-controller

docker images
REPOSITORY                                        TAG        IMAGE ID       CREATED         SIZE
github-runner                                     latest     ee0e556e28ce   25 hours ago    1.89GB
docker                                            dind       1feaad25659a   3 days ago      365MB
ghcr.io/actions/actions-runner                    latest     9f541e249fd4   10 days ago     1.14GB
registry.k8s.io/kube-apiserver                    v1.30.0    c42f13656d0b   3 weeks ago     117MB
registry.k8s.io/kube-controller-manager           v1.30.0    c7aad43836fa   3 weeks ago     111MB
registry.k8s.io/kube-scheduler                    v1.30.0    259c8277fcbb   3 weeks ago     62MB
registry.k8s.io/kube-proxy                        v1.30.0    a0bf559e280c   3 weeks ago     84.7MB
ghcr.io/actions/gha-runner-scale-set-controller   0.9.1      9ffa9943ca6b   3 weeks ago     199MB
registry.k8s.io/etcd                              3.5.12-0   3861cfcd7c04   3 months ago    149MB
registry.k8s.io/coredns/coredns                   v1.11.1    cbb01a7bd410   9 months ago    59.8MB
registry.k8s.io/pause                             3.9        e6f181688397   19 months ago   744kB
gcr.io/k8s-minikube/storage-provisioner           v5         6e38f40d628d   3 years ago     31.5MB

kubectl -n arc-runners get pods
NAME                                           READY   STATUS                  RESTARTS   AGE
self-hosted-x64-linux-api-nz55j-runner-2lms2   0/2     Init:ImagePullBackOff   0          18s
self-hosted-x64-linux-api-nz55j-runner-ws72n   0/2     Init:ImagePullBackOff   0          18s

kubectl -n arc-runners describe pod self-hosted-x64-linux-api-nz55j-runner-2lms2 | tail -n 20
    SizeLimit:  <unset>
  kube-api-access-ntn9m:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   BestEffort
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
  Type     Reason     Age                  From               Message
  ----     ------     ----                 ----               -------
  Normal   Scheduled  2m47s                default-scheduler  Successfully assigned arc-runners/self-hosted-x64-linux-api-nz55j-runner-2lms2 to arc
  Normal   Pulling    78s (x4 over 2m46s)  kubelet            Pulling image "github-runner:latest"
  Warning  Failed     78s (x4 over 2m46s)  kubelet            Failed to pull image "github-runner:latest": Error response from daemon: pull access denied for github-runner, repository does not exist or may require 'docker login': denied: requested access to the resource is denied
  Warning  Failed     78s (x4 over 2m46s)  kubelet            Error: ErrImagePull
  Warning  Failed     67s (x6 over 2m46s)  kubelet            Error: ImagePullBackOff
  Normal   BackOff    52s (x7 over 2m46s)  kubelet            Back-off pulling image "github-runner:latest"

Note: Feature requests to integrate vendor specific cloud tools (e.g. awscli, gcloud-sdk, azure-cli) will likely be rejected as the Runner image aims to be vendor agnostic.

Why is this needed?

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Additional context

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Start with runner-scale-set/values.yaml and the generated runner pod specification, then inspect the pod events from kubectl describe to trace where imagePullPolicy is applied. Done means a locally built github-runner:latest image can be used by the runner without attempting a registry pull, with the relevant configuration behavior documented or tested.