Docker Desktop is an easy-to-use cross-platform GUI (Graphical User Interface) application used to manage Docker images, containers, and apps from your local computer. It can be used either as a standalone tool or in combination with the command-line interface client.

A full-featured Docker development environment can be quickly set up using Docker Desktop, which supports multiple programming languages and frameworks. It includes the latest version of Kubernetes, the Docker engine, the Docker CLI client, Docker Buildx, Docker Compose, extensions, and the Docker Content Trust, all pre-installed.

With native Windows Hyper-V virtualization, it delivers fast and reliable performance on Windows systems and allows seamless switching between Linux and Windows Server environments during app development. Additionally, it can run natively on Linux within Windows through the Windows Subsystem for Linux 2 (WSL 2).

Moreover, Docker Desktop provides file change notifications, volume mounting for code and data, and straightforward access to running containers on the local host network.

This guide explains how to install Docker Desktop on Ubuntu and its derivatives such as Linux Mint. The testing was done on Ubuntu 22.04.

This guide walks you through installing Docker Desktop on Ubuntu 22.04 and Ubuntu-based distributions like Linux Mint.

Table of Contents

• A 64-bit kernel with CPU support for virtualization/KVM.
• QEMU version 5.2 or newer (latest recommended).
• Systemd as the init system.
• GNOME, KDE, or MATE desktop environment.
• Minimum 4 GB RAM.
• ID mapping enabled in user namespaces.

1. Checking KVM Virtualization Support in Ubuntu

As mentioned earlier, Docker Desktop requires KVM support since it runs a virtual machine. If your system supports virtualization, the KVM module should load automatically. However, you can manually load the module using the following command:

<code>$ modprobe kvm</code>

Depending on your processor type, run one of the commands below to load the appropriate module:

<code>$ modprobe kvm_intel  [For Intel CPUs]
$ modprobe kvm_amd    [For AMD CPUs]  </code>

To verify whether KVM acceleration is available on your system, execute this command:

<code>$ kvm-ok</code>

Also, confirm that the KVM modules are loaded by running:

<code>$ lsmod | grep kvm</code>

Now that you've verified the prerequisites, proceed to install Docker Desktop as outlined below.

2. Install Docker Repository in Ubuntu

Begin by updating the package index and installing necessary dependencies, creating a directory for the repository key, importing the key, and configuring the Docker APT repository:

<code>$ sudo apt-get update
$ sudo apt-get install ca-certificates curl gnupg lsb-release
$ sudo mkdir -m 0755 -p /etc/apt/keyrings
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
$ 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</code>

3. Install Docker Desktop on Ubuntu

Next, download the Docker Desktop DEB package using the wget utility:

<code>$ wget -c https://desktop.docker.com/linux/main/amd64/docker-desktop-4.17.0-amd64.deb</code>

Then update the package index again and install the downloaded package:

<code>$ sudo apt update
$ sudo apt install ./docker-desktop-4.17.0-amd64.deb</code>

Note: Before launching the application, remember that on Linux, Docker Desktop runs a Virtual Machine (VM) and creates a custom docker context named desktop-linux upon startup.

Therefore, any existing images and containers on the Linux Docker Engine prior to installation will not appear in Docker Desktop for Linux.

3. Using Docker Desktop on Ubuntu

After successfully installing Docker Desktop, locate it via the Activities or Applications menu and click to launch, as shown in the screenshot below.

Upon first launch, the Docker Subscription Service Agreement window will appear. Read through it and click Accept to continue, as highlighted in the next screenshot.

Starting Container Using Docker Desktop

Now it's time to run your first container using Docker Desktop by executing the following command:

<code>$ docker run -d -p 80:80 docker/getting-started </code>

Once the command has executed, you should see a running container displayed in the next screenshot.

Click the expand arrow under the Port(s) column to open the simple static site hosted inside the container directly in your browser.

Congratulations! You have successfully installed Docker Desktop on your Ubuntu system and launched a sample container. For further assistance, explore the Getting Started guide provided by the static site in the container or refer to the official documentation.

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