docker设置代理，通过代理服务器拉取镜像

mkdir -p /etc/systemd/system/docker.service.d

vi /etc/systemd/system/docker.service.d/http-proxy.conf

[Service]
Environment="HTTP_PROXY=http://x.x.x.x:8080"
Environment="HTTPS_PROXY=https://x.x.x.x:8080"
Environment="NO_PROXY=localhost,127.0.0.1"

重启docker

systemctl daemon-reload
systemctl restart docker

docker info | grep -i proxy
#显示
 HTTP Proxy: http://x.x.x.x:8080
 HTTPS Proxy: https://x.x.x.x:8080