```json { "containers": [ { "class_name": "MyContainer", "image": "./Dockerfile",

{
  "containers": [
    {
      "class_name": "MyContainer",
      "image": "./Dockerfile",
      "max_instances": 10,
      "instance_type": "basic",
      "image_vars": {
        "FOO": "BAR"
      }
    }
  ]
}

{
  "containers": [
    {
      "class_name": "MyContainer",
      "image": "./Dockerfile",
      "max_instances": 10,
      "instance_type": "basic",
      "image_vars": {
        "FOO": "BAR"
      }
    }
  ]
}