Docker Installation Visual Guide

1

🏠

cd ~

Navigate to Home Directory
Moves to your user's home directory to ensure we're starting from a clean, known location.

Navigation Setup

2

📥

curl -fsSL https://get.docker.com -o get-docker.sh

Download Docker Installation Script
Downloads the official Docker installation script from Docker's servers. The flags mean:
• -f: Fail silently on errors
• -s: Silent mode
• -S: Show errors
• -L: Follow redirects

Download Script

3

⚙️

sudo sh ./get-docker.sh

Run Installation Script
Executes the Docker installation script with superuser privileges. This installs Docker Engine, Docker CLI, and containerd on your system.

Installation Root Required

4

👥

sudo groupadd docker

Create Docker Group
Creates a new system group called "docker". This group will have permissions to run Docker commands without sudo.

Security Groups

5

👤

sudo usermod -aG docker $USER

Add Current User to Docker Group
Adds your current user account to the docker group, allowing you to run Docker commands without using sudo every time.

Permissions User Management

6

🔄

newgrp docker

Activate Group Membership
Immediately activates the docker group membership for the current shell session without needing to log out and back in.

Session Groups

7

🚀

sudo systemctl enable docker

Enable Docker at Boot
Configures Docker to start automatically when the system boots up. This ensures Docker is always available after a restart.

Autostart System Service

8

▶️

sudo systemctl start docker

Start Docker Service
Immediately starts the Docker daemon service. After this, Docker is running and ready to accept commands.

Service Daemon

9

✅

docker run hello-world

Test Docker Installation
Runs a test container to verify Docker is installed and working correctly. This downloads and runs a small test image that prints a success message.

Verification Test

🐳 Docker Installation & Setup Process

Docker Successfully Installed!