#!/bin/bash

# Uninstall old versions
for pkg in docker.io docker-doc docker-compose podman-docker containerd runc; do
    sudo apt-get remove -y $pkg
done

# Install prerequisites
sudo apt-get update
sudo apt-get install -y ca-certificates curl

# Add Docker's official GPG key
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add Docker repository to Apt sources
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

# Update package index
sudo apt-get update

# Install Docker Engine
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# Verify the installation by running the hello-world image
sudo docker run hello-world

# Post-installation steps to use Docker as a non-root user
# Uncomment the lines below if you want to allow the current user to run Docker commands without sudo

# sudo groupadd docker
# sudo usermod -aG docker $USER
# newgrp docker

echo "Docker installation complete. If you want to run Docker commands as a non-root user, log out and log back in or uncomment the post-installation steps in this script."