|error|string|The existance of this key indicates the container will definitely fail, or has already failed.|Optional.|
|warning|string|Indicates something unusual happened or is currently happening, but isn't considered fatal.|Optional.|
|activity|string|A message for the end user about what state the container is currently in.|Optional.|
|error|string|The existance of this key indicates the container will definitely fail, or has already failed.|Optional.|
|warning|string|Indicates something unusual happened or is currently happening, but isn't considered fatal.|Optional.|
|activity|string|A message for the end user about what state the container is currently in.|Optional.|