#!/usr/bin/env bash
# Install Docker Engine.
__Author__="liy"

path="$(dirname ${0})"
logfile=${1:-"${path}/install.log"}


: ‘print log info.‘
function printlog(){
        datetime="$(date ‘+%F %T‘)"
        echo -e "\033[32m[${datetime}] $1\033[0m" |tee -a ${logfile}
}

function init(){
        which curl &>/dev/null
        if [ $? -ne 0 ];then
                printlog "Install curl command..."
                apt install curl -y &>> ${logfile}
        fi
}

function install(){
        if [ $UID == "0" ];then 
                printlog "Start install Depend pack..."
                apt-get install apt-transport-https ca-certificates curl gnupg2 software-properties-common -y  &>> ${logfile}
                printlog "Start install public key..."
                curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
                printlog "Start install Docker repository..."
                add-apt-repository "deb [arch=amd64] https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/ubuntu $(lsb_release -cs) stable"  &>> ${logfile}
                apt-get update &>> ${logfile}
                printlog "Start install Docker Engine..."
                apt-get install docker-ce=5:19.03.15~3-0~ubuntu-bionic docker-ce-cli=5:19.03.15~3-0~ubuntu-bionic -y &>> ${logfile}
                printlog "Start setting daemon.json file..."
                [ -d "/etc/docker" ] || mkdir /etc/docker
cat << EOF > /etc/docker/daemon.json
{
"registry-mirrors": ["https://docker.mirrors.ustc.edu.cn/"],
"exec-opts": ["native.cgroupdriver=systemd"]
}
EOF
                printlog ‘Update GRUB_CMDLINE_LINUX...\nPlease Reboot...‘
                sed -Ei ‘/GRUB_CMDLINE_LINUX=/s/(.*)"/\1 cgroup_enable=memory swapaccount=1"/‘ /etc/default/grub
                update-grub &>> ${logfile}
                printlog ‘Disable Swap Partition... backup file in /etc/fstab.bak‘
                sed -i.bak ‘/swap/s/^/#/‘ /etc/fstab
                systemctl daemon-reload
                printlog "Setting Docker Starting UP..."
                systemctl enable docker
        else 
                echo -e "\033[31mUse Root Exec $0...\033[0m"
                exit 127
        fi
}

function main(){
        echo -e "\033[31m${logfile} will be emptied after 3 seconds...\033[0m"
        sleep 5
        echo -n > ${logfile}
        printlog "log output to ${logfile} and use tail -f to view..."
        init
        install
}

main

UbuntuServer 1804.5安装Docker