install.docker.sh

#!/bin/bash
#
# Copyright (c) 2015 - 2022 imm studios, z.s.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
##############################################################################
## COMMON UTILS

base_dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
temp_dir=/tmp/$(basename "${BASH_SOURCE[0]}")

function error_exit {
    printf "\n\033[0;31mInstallation failed\033[0m\n"
    cd ${base_dir}
    exit 1
}

function finished {
    printf "\n\033[0;92mInstallation completed\033[0m\n"
    cd ${base_dir}
    exit 0
}

if [ "$(id -u)" != "0" ]; then
   echo "This script must be run as root" 1>&2
   error_exit
fi

if [ ! -d ${temp_dir} ]; then
    mkdir ${temp_dir} || error_exit
fi

## COMMON UTILS
##############################################################################

function install_docker () {
    apt-get install -y \
        apt-transport-https \
        ca-certificates \
        curl \
        gnupg \
        lsb-release

    curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
    echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian \
  $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null

    apt-get update
    apt-get install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin
}

install_docker || error_exit
finished