Change Docker Desktop settings on Linux

This page provides information on how to configure and manage your Docker Desktop settings.

To navigate to Settings either:

• Select the Docker menu and then Settings
• Select the Settings icon from the Docker Dashboard.

You can also locate the settings.json file at ~/.docker/desktop/settings.json.

General

On the General tab, you can configure when to start Docker and specify other settings:

• Start Docker Desktop when you log in. Select to automatically start Docker Desktop when you sign in to your machine.

• Choose Theme for Docker Desktop. Choose whether you want to apply a Light or Dark theme to Docker Desktop. Alternatively you can set Docker Desktop to Use System Settings.

• Choose container terminal. Determines which terminal is launched when opening the terminal from a container. If you choose the integrated terminal, you can run commands in a running container straight from the Docker Dashboard. For more information, see Explore containers.

• Send usage statistics. Select so Docker Desktop sends diagnostics, crash reports, and usage data. This information helps Docker improve and troubleshoot the application. Clear the check box to opt out. Docker may periodically prompt you for more information.

• Show weekly tips. Select to display useful advice and suggestions about using Docker.

• Open Docker Desktop dashboard at startup. Select to automatically open the dashboard when starting Docker Desktop.

• Use Enhanced Container Isolation. Select to enhance security by preventing containers from breaching the Linux VM. For more information, see Enhanced Container Isolation

  Note

  This setting is only available if you are signed in to Docker Desktop and have a Docker Business subscription.

• Show CLI hints. Displays CLI hints and tips when running Docker commands in the CLI. This is turned on by default. To turn CLI hints on or off from the CLI, set DOCKER_CLI_HINTS to true or false respectively.

• SBOM Indexing. When this option is enabled, inspecting an image in Docker Desktop shows a Start analysis button that, when selected, analyzes the image with Docker Scout.

• Enable background SBOM indexing. When this option is enabled, Docker Scout automatically analyzes images that you build or pull.

Resources

The Resources tab allows you to configure CPU, memory, disk, proxies, network, and other resources.

Advanced

On the Advanced tab, you can limit resources available to the Docker Linux VM.

Advanced settings are:

• CPU limit. Specify the maximum number of CPUs to be used by Docker Desktop. By default, Docker Desktop is set to use all the processors available on the host machine.

• Memory limit. By default, Docker Desktop is set to use up to 25% of your host's memory. To increase the RAM, set this to a higher number; to decrease it, lower the number.

• Swap. Configure swap file size as needed. The default is 1 GB.

• Virtual disk limit. Specify the maximum size of the disk image.

• Disk image location. Specify the location of the Linux volume where containers and images are stored.

  You can also move the disk image to a different location. If you attempt to move a disk image to a location that already has one, you are asked if you want to use the existing image or replace it.

Tip

If you feel Docker Desktop starting to get slow or you're running multi-container workloads, increase the memory and disk image space allocation

• Resource Saver. Enable or disable Resource Saver mode, which significantly reduces CPU and memory utilization on the host by automatically turning off the Linux VM when Docker Desktop is idle (i.e., no containers are running).

  You can also configure the Resource Saver timeout which indicates how long should Docker Desktop be idle before Resource Saver mode kicks in. Default is 5 minutes.

  Note

  Exit from Resource Saver mode occurs automatically when containers run. Exit may take a few seconds (~3 to 10 secs) as Docker Desktop restarts the Linux VM.

File sharing

Use File sharing to allow local directories on your machine to be shared with Linux containers. This is especially useful for editing source code in an IDE on the host while running and testing the code in a container.

By default the /home/<user> directory is shared. If your project is outside this directory then it must be added to the list, otherwise you may get Mounts denied or cannot start service errors at runtime.

File share settings are:

• Add a Directory. Select + and navigate to the directory you want to add.

• Remove a Directory. Select - next to the directory you want to remove

• Apply & Restart makes the directory available to containers using Docker's bind mount (-v) feature.

Tips on shared folders, permissions, and volume mounts

• Share only the directories that you need with the container. File sharing introduces overhead as any changes to the files on the host need to be notified to the Linux VM. Sharing too many files can lead to high CPU load and slow filesystem performance.
• Shared folders are designed to allow application code to be edited on the host while being executed in containers. For non-code items such as cache directories or databases, the performance will be much better if they are stored in the Linux VM, using a data volume (named volume) or data container.

Proxies

To configure HTTP proxies, switch on the Manual proxy configuration setting. This setting is used for logging into Docker, for pulling and pushing images, and for container Internet access. If the proxy requires authorization then Docker Desktop dynamically asks the developer for a username and password. All passwords are stored securely in the OS credential store. Note that only the Basic proxy authentication method is supported so we recommend using an https:// URL for your HTTP/HTTPS proxies to protect passwords while in transit on the network. Docker Desktop supports TLS 1.3 when communicating with proxies.

To prevent developers from accidentally changing the proxy settings, see Settings Management.

Network

Docker Engine

The Docker Engine tab allows you to configure the Docker daemon used to run containers with Docker Desktop.

You configure the daemon using a JSON configuration file. Here's what the file might look like:

{
  "builder": {
    "gc": {
      "defaultKeepStorage": "20GB",
      "enabled": true
    }
  },
  "experimental": false
}

You can find this file at $HOME/.docker/daemon.json. To change the configuration, either edit the JSON configuration directly from the dashboard in Docker Desktop, or open and edit the file using your favorite text editor.

Note

Only the Docker Desktop daemon uses the configuration file under $HOME/.docker. If you manually install Docker Engine alongside Docker Desktop, the manually installed instance uses a daemon.json configuration file in a different location. Refer to Configure the daemon for more information about how to configure the Docker daemon on a manually installed Docker Engine.

To see the full list of possible configuration options, see the dockerd command reference.

Select Apply & Restart to save your settings and restart Docker Desktop.

Builders

If you have turned on the Docker Desktop Builds view, you can use the Builders tab to inspect and manage builders in the Docker Desktop settings.

Inspect

To inspect builders, find the builder that you want to inspect and select the expand icon. You can only inspect active builders.

Inspecting an active builder shows:

• BuildKit version
• Status
• Driver type
• Supported capabilities and platforms
• Disk usage
• Endpoint address

Select a different builder

The Selected builder section displays the selected builder. To select a different builder:

1. Find the builder that you want to use under Available builders
2. Open the drop-down menu next to the builder's name.
3. Select Use to switch to this builder.

Your build commands now use the selected builder by default.

Create a builder

To create a builder, use the Docker CLI. See Create a new builder

Remove a builder

You can remove a builder if:

• The builder isn't your selected builder

• The builder isn't associated with a Docker context.

  To remove builders associated with a Docker context, remove the context using the docker context rm command.

To remove a builder:

1. Find the builder that you want to remove under Available builders
2. Open the drop-down menu.
3. Select Remove to remove this builder.

If the builder uses the docker-container or kubernetes driver, the build cache is also removed, along with the builder.

Stop and start a builder

Builders that use the docker-container driver run the BuildKit daemon in a container. You can start and stop the BuildKit container using the drop-down menu.

Running a build automatically starts the container if it's stopped.

You can only start and stop builders using the docker-container driver.

Kubernetes

Docker Desktop includes a standalone Kubernetes server, so that you can test deploying your Docker workloads on Kubernetes. To turn on Kubernetes support and install a standalone instance of Kubernetes running as a Docker container, select Enable Kubernetes.

Select Show system containers (advanced) to view internal containers when using Docker commands.

Select Reset Kubernetes cluster to delete all stacks and Kubernetes resources.

For more information about using the Kubernetes integration with Docker Desktop, see Deploy on Kubernetes.

Software Updates

The Software Updates tab notifies you of any updates available to Docker Desktop. When there's a new update, select the Release Notes option to learn what's included in the updated version.

Turn off the check for updates by clearing the Automatically check for updates check box. This disables notifications in the Docker menu and the notification badge that appears on the Docker Dashboard. To check for updates manually, select the Check for updates option in the Docker menu.

To allow Docker Desktop to automatically download new updates in the background, select Always download updates. This downloads newer versions of Docker Desktop when an update becomes available. After downloading the update, select Apply and Restart to install the update. You can do this either through the Docker menu or in the Updates section in the Docker Dashboard.

Extensions

Use the Extensions tab to:

• Enable Docker Extensions
• Allow only extensions distributed through the Docker Marketplace
• Show Docker Extensions system containers

For more information about Docker extensions, see Extensions.

Features in development

On the Feature control tab you can control your settings for Beta features and Experimental features.

You can also sign up to the Developer Preview programopen_in_new from the Features in development tab.

Beta features

Use containerd for pulling and storing images

Turns on the containerd image store. This brings new features like faster container startup performance by lazy-pulling images, and the ability to run Wasm applications with Docker. For more information, see containerd image store.

Experimental features

On the Experimental features tab, you have the option to allow feature flags. These are features that Docker is currently experimenting with. This is switched on by default.

These features are intended for testing and feedback only as they may change between releases without warning or remove them entirely from a future release. Docker doesn't offer support for experimental features.

Notifications

Use the Notifications tab to turn on or turn off notifications for the following events:

• Status updates on tasks and processes
• Docker announcements
• Docker surveys

By default, all notifications are turned on. You'll always receive error notifications and notifications about new Docker Desktop releases and updates.

Notifications momentarily appear in the lower-right of the Docker Dashboard and then move to the Notifications drawer. To open the Notifications drawer, select .