笔试面试 某业务需要提交了新的yaml文件要求部署服务,运行后发现服务未正常启动,Pod 一直处于 ImagePullBackOff 状态,查看日志得到如下结果: PullImage "nginx/test:v0.2" from image service failed: rpc error: code = Unknown desc = Error response from daemon: manifest for nginx/test:v0.2 not found 根据以上故障信息,可以得知故障的原因是()