docker 安裝

需求

安裝docker運行環境

準備條件

1. 一臺VPS（本文使用阿里雲香港 - centos7.7）
2. 一臺能SSH鏈接到VPS的本地電腦 （推薦鏈接工具xshell）

安裝步驟

安裝docker

curl -fsSL https://get.docker.com -o get-docker.sh
sh get-docker.sh --mirror Aliyun

配置docker訪問加速

tee /etc/docker/daemon.json <<-'EOF'
{
 "registry-mirrors": [
 	 "https://ze9vyrof.mirror.aliyuncs.com",
     "https://registry.docker-cn.com",
     "http://f1361db2.m.daocloud.io",
     "https://docker.mirrors.ustc.edu.cn"
 ]
}
EOF

建立用戶並加入docker組

useradd -g docker docker
usermod -aG docker docker

加入開啓啓動、啓動docker應用

systemctl enable docker
systemctl start docker

測試 Docker 是否安裝正確

docker run hello-world

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
0e03bdcc26d7: Pulling fs layer 
latest: Pulling from library/hello-world
0e03bdcc26d7: Pull complete 
Digest: sha256:8e3114318a995a1ee497790535e7b88365222a21771ae7e53687ad76563e8e76
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://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

參考文獻

https://docs.docker.com/engine/install/centos/