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Merge pull request #14162 from usha-mandya/pos-622
Add Desktop for Linux tech preview doc
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---
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description: Docker Desktop for Linux Tech Preview
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keywords: docker, linux, tech preview
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title: Docker Desktop for Linux (Tech Preview)
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toc_min: 1
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toc_max: 2
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---
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Welcome to the Docker Desktop for Linux Tech Preview. This Tech Preview is aimed at early adopters who would like to try an experimental build of Docker Desktop for Linux and provide feedback.
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Docker Desktop is an easy-to-install application that enables you to build and
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share containerized applications and microservices. Docker Desktop for Linux
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(DD4L) is the second-most popular feature request in our [public
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roadmap](https://github.com/docker/roadmap/projects/1){: target="_blank"
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rel="noopener" class="_"}.
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## Download and install
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Docker Desktop for Linux is currently available on Ubuntu 21.04, 21.10 and
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Debian distributions.
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To install Docker Desktop for Linux:
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1. Set up the [Docker repository](../../engine/install/ubuntu.md#install-using-the-repository).
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2. Download and install the Tech Preview Debian package:
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```console
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$ curl https://desktop-stage.docker.com/linux/main/amd64/73701/docker-desktop.deb --output docker-desktop.deb
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$ sudo apt install ./docker-desktop.deb
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```
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## Check the shared memory
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Before you run Docker Desktop for Linux, verify whether the shared memory available on the host is higher than the memory allocated to the VM. By default, Docker Desktop allocates half of the memory and CPU from the host.
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```console
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$ df -h /dev/shm
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Filesystem Size Used Avail Use% Mounted on
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tmpfs 16G 200M 16G 2% /dev/shm
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```
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To set the shared memory size, run:
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```console
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$ sudo mount -o remount,size=<the-size-you-want-in-GB> /dev/shm
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```
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To ensure this setting persists after a reboot, add the following entry to the `/etc/fstab`:
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```console
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none /dev/shm tmpfs defaults,size=<the-size-you-want-in-GB> 0 0
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```
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For example:
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```console
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none /dev/shm tmpfs defaults,size=8G 0 0
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```
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## Launch Docker Desktop
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To start Docker Desktop for Linux, search **Docker Desktop** on the
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**Applications** menu and open it. This launches the whale menu icon and opens
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the Docker Dashboard, reporting the status of Docker Desktop.
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Alternatively, open a terminal and run:
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```console
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$ systemctl --user start docker-desktop
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```
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When Docker Desktop starts, it creates a dedicated context that the Docker CLI can use as a target. This is to avoid a clash with a local Docker Engine that may be running on the Linux host and using the default context.
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Run the following command to switch to the desktop-linux context.
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```console
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$ docker context use desktop-linux
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```
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The Docker Desktop installer updates Docker Compose and the Docker CLI binaries
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on the host. It installs Docker Compose V2 as the default Docker Compose. It
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also replaces the default Docker CLI with a new Docker CLI binary that includes
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cloud-integration capabilities.
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After you’ve successfully installed Docker Desktop, you can check the versions
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of these binaries by running the following command:
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```console
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$ docker-compose version
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Docker Compose version v2.2.3
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$ docker --version
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Docker version 20.10.12, build e91ed57
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$ docker version
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Client: Docker Engine - Community
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Cloud integration: 1.0.17
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Version: 20.10.12
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API version: 1.41
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...
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```
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To enable Docker Desktop to start on login, from the Docker menu, select
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**Settings** > **General** > **Start Docker Desktop when you log in**.
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Alternatively, open a terminal and run:
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```console
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$ systemctl --user enable docker-desktop
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```
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To stop Docker Desktop, click on the whale menu tray icon to open the Docker menu and select **Quit Docker Desktop**.
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Alternatively, open a terminal and run:
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```console
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$ systemctl --user stop docker-desktop
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```
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## Logs
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If you experience any issues, you can access Docker Desktop logs by running the following command:
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```console
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$ journalctl --user --unit=docker-desktop
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```
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You can also find additional logs for the internal components included in Docker
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Desktop at `$HOME/.docker/desktop/log/`.
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## Uninstall
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To remove Docker Desktop for Linux, run:
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```console
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$ sudo apt remove docker-desktop
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```
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## Feedback
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Your feedback is important to us. Let us know what you think by adding a comment
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on our [Docker for Linux public roadmap](https://github.com/docker/roadmap/issues/39){: target="_blank" rel="noopener" class="_"} issue.
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