json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Image commands plugin manifest",
      "type": "object",
      "properties": {
          "plugins": {
              "type": "object",
              "properties": {
                  "image_commands": {
                      "type": "object",
                      "properties": {
                          "commands": {
                              "type": "array",
                              "items": {
                                  "type": "array",
                                  "items": {
                                      "type": "string"
                                  },
                                  "minItems": 1
                              },
                              "minItems": 1
                          }
                      },
                      "required": [
                          "commands"
                      ]
                  }
              },
              "required": [
                  "image_commands"
              ]
          }
      },
      "required": [
          "plugins"
      ]
  }