install-docker-ubuntu.sh

#!/bin/bash

# This script installs Docker on Ubuntu systems.
# https://docs.docker.com/engine/install/ubuntu/

# Navigate to the directory where the script resides
DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd $DIR

echo "Starting Docker installation process for Ubuntu..."
echo "==================================================="

echo "1. Updating package lists and installing prerequisites"
# Update and install required packages
sudo apt-get update -y
sudo apt-get install ca-certificates curl -y
echo "   - Package lists updated and prerequisites installed"

echo "2. Setting up Docker GPG key and repository"
# Create a directory for Docker's GPG key
sudo install -m 0755 -d /etc/apt/keyrings

# Download and add Docker's 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
echo "   - Docker GPG key added"

# Add 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
echo "   - Docker repository added to APT sources"

echo "3. Installing Docker components"
# Update APT and install Docker components
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y
echo "   - Docker components installed successfully"

echo "==================================================="
echo "Docker installation process completed successfully!"