dockers环境搭建求助

按照资料，提示命令docker run -it --rm -v /home/x3:/data docker.hobot.cc/aitools/horizon_x3_tc:1.0.post10

提示的错误是：

Unable to find image 'docker.hobot.cc/aitools/horizon_x3_tc:1.0.post10' locally

docker: Error response from daemon: Get https://docker.hobot.cc/v2/: dial tcp: lookup docker.hobot.cc: no such host.

See 'docker run --help'.

[root@ecs-smycloud-0002 tar]# docker run -it --rm -v /home/x3:/data docker.hobot.cc/aitools/horizon_x3_tc:${version}

Unable to find image 'docker.hobot.cc/aitools/horizon_x3_tc:v1.1.6' locally

docker: Error response from daemon: Get https://docker.hobot.cc/v2/: dial tcp: lookup docker.hobot.cc: no such host.

See 'docker run --help'.

不太熟悉docker希望高手指导。我是哪里出我问题了。