CentOS7 安装 Docker CE步骤

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

#配置yum源
sudo yum-config-manager --add-repo https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo

#安装依赖包
sudo yum install -y yum-utils device-mapper-persistent-data lvm2

sudo yum-config-manager --enable docker-ce-edge

sudo yum-config-manager --enable docker-ce-test

sudo yum makecache fast
sudo yum install docker-ce

curl -fsSL get.docker.com -o get-docker.sh
sudo sh get-docker.sh --mirror Aliyun

sudo systemctl enable docker
sudo systemctl start docker

sudo groupadd docker

sudo usermod -aG docker $USER

docker run hello-world
Unable to find image ‘hello-world:latest‘ locally
latest: Pulling from library/hello-world
ca4f61b1923c: Pull complete
Digest: sha256:be0cd392e45be79ffeffa6b05338b98ebb16c87b255f48e297ec7f98e123905c
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://cloud.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/engine/userguide/

{
    "registry-mirrors": [
        "https://registry.docker-cn.com"
    ]
}

sudo tee -a /etc/sysctl.conf <<-EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF

sudo sysctl -p