01_Docker_Setup.md

Docker Install using the docker.io package on Ubuntu

Step 1: Update Your Package List

First, update the package index to ensure you're working with the latest list of available packages:

sudo apt update

Step 2: Install Docker

Now, install Docker using the docker.io package from the Ubuntu repository:

sudo apt install -y docker.io

This will install Docker, the Docker CLI, and other related tools.

Step 3: Start and Enable Docker

After installation, start the Docker service and enable it to automatically start on boot:

sudo systemctl start docker
sudo systemctl enable docker

Step 4: Verify Docker Installation

To confirm that Docker has been installed and is running correctly, check the version:

docker --version

You can also run a test container to ensure everything is working:

sudo docker run hello-world

Step 5: (Optional) Manage Docker as a Non-Root User

To avoid using sudo for every Docker command, add your user to the docker group:

sudo usermod -aG docker $USER

After running this command, log out and log back in, or run:

newgrp docker

Now you can use Docker commands without sudo:

docker ps

Step 6: Test Docker Setup

To make sure Docker is running properly, try pulling and running an image, such as Nginx:

docker pull nginx
docker run -d -p 80:80 nginx

This will pull the Nginx image and start an Nginx web server on port 80.