Ubuntu安装docker/docker-compose(在全新系统状态下的安装)

设置仓库

更新 apt 包索引。

$ sudo apt-get update

安装 apt 依赖包，用于通过HTTPS来获取仓库:

$ sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common

添加 Docker 的官方 GPG 密钥：

$ curl -fsSL https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu/gpg | sudo apt-key add -

9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88 通过搜索指纹的后8个字符，验证您现在是否拥有带有指纹的密钥。

$ sudo apt-key fingerprint 0EBFCD88

　　　　pub   rsa4096 2017-02-22 [SCEA]
 　　　　     9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88
　　　　uid           [ unknown] Docker Release (CE deb) <docker@docker.com>
　　　　sub   rsa4096 2017-02-22 [S]

使用以下指令设置稳定版仓库

$ sudo add-apt-repository \
   "deb [arch=amd64] https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu/ \
  $(lsb_release -cs) \
  stable"

安装 Docker Engine-Community

更新 apt 包索引。

$ sudo apt-get update

安装最新版本的 Docker Engine-Community 和 containerd

$ sudo apt-get install docker-ce docker-ce-cli containerd.io

测试 Docker 是否安装成功，输入以下指令，打印出以下信息则安装成功:

$ sudo docker run hello-world
 
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete                                                                                                                                  Digest: sha256:c3b4ada4687bbaa170745b3e4dd8ac3f194ca95b2d0518b417fb47e5879d9b5f
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/

安装 Docker-Compose

docker-compose的安装不推荐pip安装，无论如何都会失败，用以下官方提供的方法，最后一条指令返回docker-compose的版本信息：

$ sudo curl -L https://github.com/docker/compose/releases/download/1.21.2/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose

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

$ docker-compose --version

docker pull镜像加速源配置，docker-compose和docker共用一个，下列命令行执行完后直接重启docker服务，如果docker镜像下载速度缓慢，则重新启动系统可解决这个问题

$ sudo mkdir -p /etc/docker

$ sudo tee /etc/docker/daemon.json <<-'EOF' 
{ 
　　"registry-mirrors": ["https://fudfkcar.mirror.aliyuncs.com"] 
} 
EOF

至此安装docker与docker-compose完成，现在可享用docker

docker的安装采摘自：https://www.runoob.com/docker/ubuntu-docker-install.html