How To Install Docker on Ubuntu 22.04

To install Docker on Ubuntu 22.04, you can follow these steps:

Step 1 : Run the following command to update the package lists for upgrades and new package installations:

sudo apt update

Step 2 : Docker requires a few packages to be installed before it can be set up. Run the following command to install these dependencies:

sudo apt install apt-transport-https ca-certificates curl software-properties-common

Step 3 : Add Docker's official GPG key to ensure the integrity of the software packages:

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

Step 4 : Add Docker Repository

echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

Step 5 : Update the package list again and install Docker:

sudo apt update

sudo apt install docker-ce

Step 5 : Start the Docker service and enable it to start on boot:

sudo systemctl start docker
sudo systemctl enable docker

Step 6 : You can check if Docker is installed and running by running:

docker --version

This should display the installed Docker version.

Step 7 : Run a simple test to ensure Docker is working properly:

sudo docker run hello-world

This command downloads a test image and runs a container based on it. If everything is set up correctly, you should see a message indicating that your installation appears to be working correctly.

Step 3 : Verify Docker Compose is installed correctly:

docker compose version

This should display the installed version of Docker Compose.

That's it! Docker should now be installed on your Ubuntu 22.04 system. You can start using it to manage containers.