# 🐳 How to Install and Use Docker on Ubuntu 22.04

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A step-by-step guide to installing Docker Community Edition (CE) on Ubuntu 22.04, based on the [DigitalOcean Tutorial](https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-22-04).

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## 📋 Table of Contents
- [Prerequisites](#-prerequisites)
- [Installation Guide](#-installation-guide)
  - [Step 1: Update Packages](#1-update-packages)
  - [Step 2: Install Dependencies](#2-install-dependencies)
  - [Step 3: Add Docker Repository](#3-add-docker-repository)
  - [Step 4: Install Docker Engine](#4-install-docker-engine)
- [Post-Installation Configuration](#-post-installation-configuration)
- [Verification](#-verification)

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## 🛠 Prerequisites

Before you begin, ensure you have:
* One **Ubuntu 22.04** server.
* A user with `sudo` privileges.
* An active firewall (optional but recommended).

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## 🚀 Installation Guide

### 1. Update Packages
First, update your existing list of packages to ensure you are getting the latest versions.

```bash
sudo apt update