#!/bin/bash

if which docker >/dev/null 2>&1; then
    echo "Docker is installed"
    exit 1
else
    echo "Docker is not installed"
fi

if lsb_release -a 2>/dev/null | grep -q -E "Debian"; then
  echo "Running Debian"

  sudo apt-get remove docker docker-engine docker.io containerd runc -y
  sudo apt-get update -y
  sudo apt-get install \
    ca-certificates \
    curl \
    gnupg -y
  sudo install -m 0755 -d /etc/apt/keyrings
  curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
  sudo chmod a+r /etc/apt/keyrings/docker.gpg
  echo \
    "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian \
    "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" |
    sudo tee /etc/apt/sources.list.d/docker.list >/dev/null
  sudo apt-get update -y
  sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y

elif lsb_release -a 2>/dev/null | grep -q -E "Ubuntu"; then
  echo "Running Ubuntu"

  sudo apt-get remove docker docker-engine docker.io containerd runc -y
  sudo apt-get update -y
  sudo apt-get install ca-certificates curl gnupg -y
  sudo install -m 0755 -d /etc/apt/keyrings
  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
  sudo chmod a+r /etc/apt/keyrings/docker.gpg
  echo \
    "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
    "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" |
    sudo tee /etc/apt/sources.list.d/docker.list >/dev/null
  sudo apt-get update -y
  sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y

elif cat /etc/os-release 2>/dev/null | grep -q -i "alpine"; then
  echo "Running Alpine"
  apk add docker docker-compose
  addgroup username docker
  rc-update add docker default
  service docker start
else
  echo "Unknown distribution"
  exit 1
fi