{
  "$schema": "http://json-schema.org/draft-07/schema",
  "title": "JSON schema for .circleci/config.yml",
  "definitions": {
    "default": {
      "oneOf": [
        {
          "type": "boolean"
        },
        {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "machine": {
                "type": "object",
                "properties": {
                  "enabled": {
                    "description": "This must be true in order to enable the `machine` executor. Is required if no other value is specified",
                    "type": "boolean"
                  },
                  "image": {
                    "description": "The image to use (default: circleci/classic:latest)",
                    "type": "string"
                  },
                  "docker_layer_caching": {
                    "description": "Set to true to enable Docker Layer Caching",
                    "type": "boolean"
                  }
                }
              }
            }
          }
        }
      ]
    }
  }
}