在centos上安装docker

在centos上安装docker

原文：https://docs.docker.com/install/linux/docker-ce/centos/
https://docs.docker.com/compose/install/

1. 确保机器上没有旧版本

sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-selinux \
                  docker-engine-selinux \
                  docker-engine

2. 安装docker的repo

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

yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo

3. 安装docker CE

yum install docker-ce

4. 添加启动项

systemctl enable docker

启动

systemctl start docker

4. 加一个非root用户

groupadd docker
usermod -aG docker $USER

添加好了要重新登录一下系统

5. 测一下

用新用户登录，跑一下hello world看看

docker run hello-world

6. 装docker compose

到github上看看最新的版本
https://github.com/docker/compose/releases

下载，加权限，测试

curl -L https://github.com/docker/compose/releases/download/1.21.1/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose
docker-compose --version