docker pull manifest unknown blob errors

问题：docker pull manifest unknown blob errors

原因：公司网络是代理模式，所以我的 docker 服务配置成proxy模式：

 [root@localhost ~]# cat /usr/lib/systemd/system/docker.service
 [Unit]
 Description=Docker Application Container Engine
 Documentation=https://docs.docker.com
 After=network.target firewalld.service

 [Service]
 Type=notify
 Environment="http_proxy=http://192.168.59.241:8888/" "https_proxy=https://192.168.59.241:8888/"
 ExecStart=/usr/bin/dockerd --insecure-registry 172.19.15.95:4000
 ExecReload=/bin/kill -s HUP $MAINPID
 LimitNOFILE=infinity
 LimitNPROC=infinity
 LimitCORE=infinity
 TimeoutStartSec=0
 Delegate=yes
 KillMode=process

 [Install]
 WantedBy=multi-user.target

把配置文件中的 代理去掉：

Environment="http_proxy=http://192.168.59.241:8888/" "https_proxy=https://192.168.59.241:8888/"

 [root@localhost ~]# cat /usr/lib/systemd/system/docker.service
 [Unit]
 Description=Docker Application Container Engine
 Documentation=https://docs.docker.com
 After=network.target firewalld.service

 [Service]
 Type=notify
 ExecStart=/usr/bin/dockerd --insecure-registry 172.19.15.95:4000
 ExecReload=/bin/kill -s HUP $MAINPID
 LimitNOFILE=infinity
 LimitNPROC=infinity
 LimitCORE=infinity
 TimeoutStartSec=0
 Delegate=yes
 KillMode=process

 [Install]
 WantedBy=multi-user.target