linux下安装docker

1.安装依赖包

yum install -y yum-utils device-mapper-persistent-data lvm2 

2.设置阿里云镜像

yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo 

3.安装docker-ce

yum install docker-ce

4.启动docker

systemctl start docker
#systemctl enable docker 加入开机启动

5.建立docker用户组

groupadd docker
#添加当前用户到docker用户组
usermod -aG docker $USER

6.设置阿里云镜像加速

mkdir -p /etc/docker && touch /etc/docker/daemon.json
#录入以下内容
{
  "registry-mirrors": ["加速器地址"]
}

systemctl daemon-reload
systemctl restart docker

7.安装docker-compose

wget -L https://github.com/docker/compose/releases/download/1.25.4/run.sh > /usr/local/bin/docker-compose

chmod +x /usr/local/bin/docker-compose

docker-compose --version
#等待输出即表示安装成功
Unable to find image 'docker/compose:1.25.4' locally
1.25.4: Pulling from docker/compose
89d9c30c1d48: Pull complete
eccc02a3b135: Pull complete
7382d3c5d78f: Pull complete
f410c750fbcb: Pull complete
Digest: sha256:390bdf3da99a622f5c11f4db386dd97f2858db30cfed07d000b867f1fb25b2f7
Status: Downloaded newer image for docker/compose:1.25.4
docker-compose version 1.25.4, build 8d51620