According to the Docker Hub page for `gcr.io/google-containers/addon-resizer-amd64`, here is a brief description of this image:

addon-resizer-amd64 是 Google Kubernetes 项目中的一种容器镜像，用来调整 Deployment 中的 Pod 资源大小，以适应 Pod 的实际需求。

Translation: "addon-resizer-amd64 is an image from the Google Kubernetes project, used to adjust the resource size of Pods in a Deployment according to their actual needs."