$ esdump -q '{
  "query": {
    "bool": {
      "must": [
        {
          "exists": {
            "field": "container_name"
          }
        },
        {
          "bool": {
            "must_not": [
              {
                "exists": {
                  "field": "container_id"
                }
              }
            ]
          }
        }
      ]
    }
  }
}
' | jq -r .hits.hits[]._source.container_name