pull镜像失败：

error pulling image configuration: download failed after attempts=6: dial tcp 31.13.69.245:443: connect: connection refused

设置腾讯云镜像：

1、创建/etc/docker目录

sudo mkdir -p /etc/docker

2、创建docker镜像配置文件

sudo tee /etc/docker/daemon.json <<-'EOF'

 {

  "registry-mirrors": [

          "https://ox288s4f.mirror.aliyuncs.com",

          "https://registry.docker-cn.com",

          "http://hub-mirror.c.163.com",

          "https://mirror.ccs.tencentyun.com"

  ]

}

EOF

3、重启

sudo systemctl daemon-reload

sudo systemctl restart docker

或者

sudo service docker restart