In regards to prefect workers: How would you go about editing the base job template for a kubernetes work pool through the CLI? I am trying to do the following:

"job_configuration": {
    "env": "{{ env }}",
    "name": "{{ name }}",
    "labels": "{{ labels }}",
    "command": "{{ command }}",
    "namespace": "{{ namespace }}",
    "job_manifest": {
      "kind": "Job",
      "spec": {
        "template": {
          "spec": {
            "containers": [
              {
                "env": "{{ env }}",
                "args": "{{ command }}",
                "name": "prefect-job",
                "image": "{{ image }}",
                "imagePullPolicy": "{{ image_pull_policy }}"
              }
            ],
            "completions": 1,
            "parallelism": 1,
            "restartPolicy": "Never",
            "imagePullSecrets": [
              {
                "name": "git-registry-token"
              }
            ],
            "serviceAccountName": "{{ service_account_name }}"
          }
        },
        "ttlSecondsAfterFinished": "{{ finished_job_ttl }}"
      },
      "metadata": {
        "labels": "{{ labels }}",
        "namespace": "{{ namespace }}",
        "generateName": "{{ name }}-"
      },
      "apiVersion": "batch/v1"
    },
    "stream_output": "{{ stream_output }}",
    "cluster_config": "{{ cluster_config }}",
    "job_watch_timeout_seconds": "{{ job_watch_timeout_seconds }}",
    "pod_watch_timeout_seconds": "{{ pod_watch_timeout_seconds }}"
  }

Here I am adding the imagePullSecrets attribute so that the kubernetes job can pull the custom built runner image; however, I have to go into the UI and add this through the advanced config. Is there any clean way to do this via the CLI, or by editing the deployment.yaml/prefect.yaml? I thought about creating my own worker with its own base job template by subclassing the default kubenetes worker, but I would rather not add unnecessary complexity to my project! Thanks so much!