[docker] 安裝 docker

Ubuntu 16.04

＊請注意以下做法僅適用於 16.04 版。

1. 安裝 docker：

   sudo apt-get update
   sudo apt-get install -y apt-transport-https ca-certificates
   sudo apt-key adv \
                  --keyserver hkp://ha.pool.sks-keyservers.net:80 \
                  --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
   echo -e "deb https://apt.dockerproject.org/repo ubuntu-xenial main"\
        | sudo tee /etc/apt/sources.list.d/docker.list
   sudo apt-get update
   sudo apt-get install -y linux-image-extra-$(uname -r) linux-image-extra-virtual
   sudo apt-get install -y docker-engine
   

   
   
2. 啟動 docker 服務：

   sudo systemctl start docker.service
   

   
   
3. 測試或查看 docker 狀態：

   sudo apt-cache policy docker-engine
   sudo systemctl start docker.service
   sudo docker run hello-world
   

   
   
4. 將 docker 服務設為開機啟動：

   sudo systemctl start docker.service