This article will cover the step-by-step process of installing Docker on an Ubuntu Server.

Step 1. Update the apt package index.

<pre class="wp-block-code">```
sudo apt update

<figure class="wp-block-image size-large">![](https://darryldias.me/wp-content/uploads/apt_update-1024x695.png)</figure>Step 2. Install packages that allow us to use the repository over HTTPS.

```
 sudo apt-get install \
    ca-certificates \
    curl \
    gnupg \
    lsb-release
```
```

Step 3. Adding the official Docker GPG keys

```
```
sudo mkdir -p /etc/apt/keyrings
```
```

![](https://darryldias.me/wp-content/uploads/mkdir_keyrings_directory-1024x661.png)
```
```
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
```
```

Step 4. Adding the Docker repository

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

![](https://darryldias.me/wp-content/uploads/added_docker_repository-1024x674.png)
Step 5. Update the apt package index once more, so we have the Docker packages added to the package index.

```
```
sudo apt update
```
```

![](https://darryldias.me/wp-content/uploads/apt_update-1024x695.png)
Step 6. Install Docker and its components

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

![](https://darryldias.me/wp-content/uploads/install_docker_with_dependencies-1024x661.png)
![](https://darryldias.me/wp-content/uploads/docker_install_dependencies-1024x660.jpg)
Step 7. Start Docker.

The command below will start Docker.

```
```
sudo systemctl start docker
```
```

![](https://darryldias.me/wp-content/uploads/sudo_systemctl_start_docker-1024x667.png)
You can also enable Docker to run at startup. It will be useful if you are using it in production.

```
```
sudo systemctl enable docker
```
```

![](https://darryldias.me/wp-content/uploads/sudo_systemctl_enable_docker-1024x924.png)
Now that we have Docker installed, we can run the hello-world container.

```
```
sudo docker run hello-world
```
```

![](https://darryldias.me/wp-content/uploads/docker_run_hello_world-1024x672.jpg)
If the above command runs successfully, we can proceed further and set up Docker to execute rootlessly. It means we don't need to run sudo before the docker command.

```
```
dockerd-rootless-setuptool.sh install
```
```

![](https://darryldias.me/wp-content/uploads/docker_rootless_setup-1024x587.jpg)
We can now run any docker container rootless, so to test this, let's rerun the hello-world container.

```
```
docker run hello-world
```
```

![](https://darryldias.me/wp-content/uploads/docker_run_hello_world_rootless-1024x951.jpg)
We have successfully got Docker up and running.

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