因网络原因�现在不能直接下载docker hub上的镜像，通过proxy设置访问。

一、测试环境。

proxy软件࿰在笔记本上使用c;192.168.253.1，proxy端口8888。下载docker镜像࿰，搭建Linux虚拟机c;虚拟IP󿄚192.168.253.129。

二、修改docker配置文件。

在虚拟机中修改docker配置文件/lib/systemd/system/docker.service，指向代理服务程序端口。

需要在Service小段中添加：

Environment="HTTP_PROXY=http://192.168.253.1:8888"
Environment="HTTPS_PROXY=http://192.168.253.1:8888"

以下：

[root@localhost ~]# vi /lib/systemd/system/docker.service[root@localhost ~]# cat /lib/systemd/system/docker.service[Unit]Description=Docker Application Container EngineDocumentation=https://docs.docker.comAfter=network-online.target firewalld.serviceWants=network-online.target[Service]Type=notifyEnvironment="HTTP_PROXY=http://192.168.253.1:8888"Environment="HTTPS_PROXY=http://192.168.253.1:8888"EnvironmentFile=-/etc/sysconfig/dockerEnvironmentFile=-/etc/sysconfig/docker-storageEnvironmentFile=-/etc/sysconfig/docker-networkEnvironment=GOTRACEBACK=crashExecStart=/usr/bin/dockerd $OPTIONS \                           $DOCKER_STORAGE_OPTIONS \                           $DOCKER_NETWORK_OPTIONS \                           $INSECURE_REGISTRYExecReload=/bin/kill -s HUP $MAINPIDLimitNOFILE=104876LimitNPRO=104876LimitCORE;infinity# set delegate yes so that systemd does not reset the cgroups of docker containersDelegate=yes# kill only the docker process, not all processes in the cgroupKillMode=process[Install]WantedBy=multi-user.target。

三、验证重启服务。

[root@localhost ~]# systemctl daemon-reload[root@localhost ~]# systemctl restart docker             [root@localhost ~]# docker pull minio/minio:latest       latest: Pulling from minio/minio5360c0b72d: Pull complete f2f8f30a646a: Pull complete 4fc5fcb7e9: Pull complete 53140b7a7f04: Pull complete 2b8c182be72c: Pull complete 4363be478988: Pull complete de7c323e2901: Pull complete 7eb10b7b511b: Pull complete 3d82d69301e2: Pull complete Digest: sha256:cd04ea408cf185cb5007ea1c398d44419b19aaaae15aaab4537cccf14b2a2f86statatus: Downloaded newer image for minio/minio:latest[root@localhost ~]#。 

 你可以看到�容器镜像࿰已能正常下载c;也可以参考使用网络proxy的配置。