Setting up an AWS EC2 Instance for Docker

Objective

Provision and configure an AWS EC2 instance.
SSH into the EC2 instance.
Install Docker on the EC2 instance.

I am using Ubuntu Operating System as base machine.

Task 1: Launch an EC2 Instance

You must have an aws subscription, be it free tier. Launching an aws instance is straight forward. You go into EC2 services from the services search bar. Select a free tier machine and download the pair key .pem extension.

Task 2: SSH into the Instance

Once the EC2 instance is running, connect to it via SSH:

Click instances and select your launched instance by check marking it and then click connect on the upper right. This will show you the commands that you need to launch on your local machine.

sudo ssh -i "testing.pem" ubuntu@ec2-064-264-61-08.compute-1.amazonaws.com

The testing.pem allows aws to let you into the instance. It's like a password for that machine. Use your own credentials to login. Remember you have to use the above command in your own local machine terminal, if you are using Linux Operating System.

Task 3: Install Docker

Now that you’re connected to your EC2 instance, install Docker:

a) 
#setting up docker's apt repository 
# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
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 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
sudo apt-get update

# b) Install the docker packages:

sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# Verify the installations:

sudo docker --version 
sudo systemctl status docker 
sudo docker run hello-world