一、Centos7 安裝Docker

Docker 軟體包已經包括在預設的 CentOS-Extras 軟體源裡。因此想要安裝 docker，只需要執行下面的 yum 命令：

yum install docker

啟動 Docker 服務並設定為開機啟動：

systemctl start docker.service
systemctl enable docker.service

二、啟動docker私有倉庫

1、下載registry

docker pull registry

2、啟動registry

mkdir -p /data/docker/registry

docker run -d -ti --restart=always --privileged=true --name docker-registry -p 5000:5000 -v /data/docker/registry:/var/lib/registry registry
 

3、配置私有倉庫地址（需要連線的docker伺服器都要配置） 

vim /etc/docker/daemon.json

{"insecure-registries":["xxx.xxx.xxx.xxx:5000"]}

4、開啟遠端呼叫（為後期使用依賴管理外掛生成docker映象）

[[email protected] docker]# vim /usr/lib/systemd/system/docker.service 

[Unit]
Description=Docker Application Container Engine
Documentation=http://docs.docker.com
After=network.target
Wants=docker-storage-setup.service
Requires=docker-cleanup.timer

[Service]
Type=notify
NotifyAccess=main
EnvironmentFile=-/run/containers/registries.conf
EnvironmentFile=-/etc/sysconfig/docker
EnvironmentFile=-/etc/sysconfig/docker-storage
EnvironmentFile=-/etc/sysconfig/docker-network
Environment=GOTRACEBACK=crash
Environment=DOCKER_HTTP_HOST_COMPAT=1
Environment=PATH=/usr/libexec/docker:/usr/bin:/usr/sbin
ExecStart=/usr/bin/dockerd-current \
          -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock \
          --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current \
          --default-runtime=docker-runc \
          --exec-opt native.cgroupdriver=systemd \
          --userland-proxy-path=/usr/libexec/docker/docker-proxy-current \
          --init-path=/usr/libexec/docker/docker-init-current \
          --seccomp-profile=/etc/docker/seccomp.json \
          $OPTIONS \
          $DOCKER_STORAGE_OPTIONS \
          $DOCKER_NETWORK_OPTIONS \
          $ADD_REGISTRY \
          $BLOCK_REGISTRY \
          $INSECURE_REGISTRY \
          $REGISTRIES
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=1048576
LimitNPROC=1048576
LimitCORE=infinity
TimeoutStartSec=0
Restart=on-abnormal
KillMode=process

[Install]
WantedBy=multi-user.target

增加 “-H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock \”