Install Docker using repo

docker-repo-install.sh

#!/bin/bash

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

# Update the package index
echo "Updating package index..."
sudo apt-get update

# Install prerequisites
echo "Installing ca-certificates and curl..."
sudo apt-get install -y ca-certificates curl

# Create the directory for the keyring if it doesn't already exist
echo "Creating /etc/apt/keyrings directory..."
sudo install -m 0755 -d /etc/apt/keyrings

# Add Docker's official GPG key
echo "Adding Docker's official GPG key..."
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

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

# Update the package index with the new repository
echo "Updating package index with the Docker repository..."
sudo apt-get update

echo "Docker repository setup is complete. You can now install Docker."