Install Docker on Ubuntu

install-docker.sh

#!/bin/bash
if [[ $EUID -ne 0 ]]; then
   echo "This script must be run as root"
   exit 1
fi

RED='\033[0;31m'
NC='\033[0m'
GREEN='\033[0;32m'

echo -e "${RED}Removing old versions...${NC}"
apt purge -qq -y docker docker-engine docker.io containerd runc &> /dev/null

echo -e "${RED}Setting up the repository...${NC}"
apt-get update -qq -y
apt-get install -qq -y \
   apt-transport-https \
   ca-certificates \
   curl \
   gnupg-agent \
   software-properties-common

echo -e "${RED}Adding Docker’s official GPG key..${NC}"
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
apt-key fingerprint 0EBFCD88
add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"

echo -e "${RED}Installing Docker...${NC}"
apt-get update -qq -y
apt-get install docker-ce docker-ce-cli containerd.io -qq -y

echo -e "${RED}Starting Docker Service...${NC}"
systemctl start docker

echo -e "${GREEN}Finished.${NC}"