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General
What are the system requirements for Docker Desktop?
Raw vs Qcow2: Qemu/KVM provides support for various image formats. The two major disk image formats, widely recommended and used are raw and qcow2. Thus, lets understand what they are and their differences. To begin with, one of the important part of virtualization is storage. However, the gotcha is that, for some reason, when writing directly to a ZFS file system, ProxMox insists on writing both the VMs and VM backups as raw block files instead of a much more compact qcow2. Ironically, if writing to an ext4 file system, Proxmox can write both VM's and VM backups in the qcow2 file format. So, a VM of, say, PopOS.
For information about Docker Desktop system requirements, see Docker Desktop for Mac system requirements and Docker Desktop for Windows system requirements.
What is an experimental feature?
Experimental features provide early access to future product functionality.These features are intended for testing and feedback only as they may changebetween releases without warning or can be removed entirely from a futurerelease. Experimental features must not be used in production environments.Docker does not offer support for experimental features.
For a list of current experimental features in the Docker CLI, see Docker CLI Experimental features.
Where can I find information about diagnosing and troubleshooting Docker Desktop issues?
You can find information about diagnosing and troubleshooting common issues in the Troubleshooting topic. See Mac Logs and Troubleshooting topic and Windows Logs and Windows Logs and Troubleshooting.
If you do not find a solution in Troubleshooting, browse issues ondocker/for-mac or docker/for-win GitHub repository, or create a new one.
How do I connect to the remote Docker Engine API?
To connect to the remote Engine API, you might need to provide the location of the Engine API for Docker clients and development tools.
Mac and Windows WSL 2 users can connect to the Docker Engine through a Unix socket: unix:///var/run/docker.sock.
If you are working with applications like Apache Maventhat expect settings for DOCKER_HOST and DOCKER_CERT_PATH environmentvariables, specify these to connect to Docker instances through Unix sockets.
For example:
Docker Desktop Windows users can connect to the Docker Engine through a named pipe: npipe:////./pipe/docker_engine, or TCP socket at this URL:tcp://localhost:2375.
For details, see Docker Engine API.
How do I connect from a container to a service on the host?
Both Mac and Windows have a changing IP address (or none if you have no network access). On both Mac and Windows, we recommend that you connect to the special DNS name host.docker.internal, which resolves to the internal IP address used by the host. This is for development purposes and does not work in a production environment outside of Docker Desktop.
For more information and examples, see how to connect from a container to a service on the hoston Mac and on Windows.
How do I connect to a container from Mac or Windows?
We recommend that you publish a port, or connect from another container. Port forwarding works for localhost; --publish, -p, or -P all work.
For more information and examples, seeI want to connect to a container from Mac and I want to connect to a container from Windows.
How do I add custom CA certificates?
Docker Desktop supports all trusted certificate authorities (CAs) (root or intermediate). For more information on adding server and client side certs, seeAdd TLS certificates on Mac and Add TLS certificates on Windows.
Can I pass through a USB device to a container?
Unfortunately, it is not possible to pass through a USB device (or aserial port) to a container as it requires support at the hypervisor level.
Can I run Docker Desktop in nested virtualization scenarios?
Docker Desktop can run inside a Windows 10 VM running on apps like Parallels orVMware Fusion on a Mac provided that the VM is properly configured. However,problems and intermittent failures may still occur due to the way these appsvirtualize the hardware. For these reasons, Docker Desktop is not supported innested virtualization scenarios. It might work in some cases, and not in others.
For more information, see Running Docker Desktop in nested virtualization scenarios.
Releases
When will Docker Desktop move to a cumulative release stream?
Starting with version 3.0.0, Docker Desktop will be available as a single, cumulative release stream. This is the same version for both Stable and Edge users. The next release after Docker Desktop 3.0.0 will be the first to be applied as a delta update. For more information, see Automatic updates.
How do new users install Docker Desktop?
Each Docker Desktop release is also delivered as a full installer for new users. The same will apply if you have skipped a version, although this doesn’t normally happen as updates will be applied automatically.
How frequent will new releases be?
New releases will be available roughly monthly, similar to Edge today, unless there are critical fixes that need to be released sooner.
How do I ensure that all users on my team are using the same version?
Previously you had to manage this yourself: now it will happen automatically as a side effect of all users being on the latest version.
My colleague has got a new version but I haven’t got it yet.
Sometimes we may roll out a new version gradually over a few days. Therefore, if you wait, it will turn up soon. Alternatively, you can select Check for Updates from the Docker menu to jump the queue and get the latest version immediately.
Where can I find information about Stable and Edge releases?
Starting with Docker Desktop 3.0.0, Stable and Edge releases are combined into a single, cumulative release stream for all users.
Support
Does Docker Desktop offer support?
Yes, Docker Desktop offers support for Pro and Team users. For more information, see Docker Desktop Support.
For information about the pricing plans and to upgrade your existing account, see Docker pricing.
What kind of feedback are you looking for?
Everything is fair game. We’d like your impressions on the download-installprocess, startup, functionality available, the GUI, usefulness of the app,command line integration, and so on. Tell us about the issues you are experiencing, what you like, or request a new feature through our public Docker Roadmap.
How is personal data handled in Docker Desktop?
When uploading diagnostics to help Docker with investigating issues, the uploaded diagnostics bundle may contain personal data such as usernames and IP addresses. The diagnostics bundles are only accessible to Docker, Inc.employees who are directly involved in diagnosing Docker Desktop issues.
By default, Docker, Inc. will delete uploaded diagnostics bundles after 30 days. You may also request the removal of a diagnostics bundle by either specifying the diagnostics ID or via your GitHub ID (if the diagnostics ID is mentioned in a GitHub issue). Docker, Inc. will only use the data in the diagnostics bundle to investigate specific user issues, but may derive high-level (non personal) metrics such as the rate of issues from it.
For more information, see Docker Data Processing Agreement.
Mac FAQs
What is Docker.app?
Docker.app is Docker Desktop on Mac. It bundles the Docker client and Docker Engine. Docker.app uses the macOS Hypervisor.framework to run containers.
Is Docker Desktop compatible with Apple silicon processors?
Yes, you can now install Docker Desktop for Mac on Apple silicon. For more information, see Docker Desktop for Apple silicon.
What is HyperKit?
HyperKit is a hypervisor built on top of the Hypervisor.framework in macOS. It runs entirely in userspace and has no other dependencies.
Docker Qcow2 Vs Rawlings
We use HyperKit to eliminate the need for other VM products, such as OracleVirtualBox or VMWare Fusion.
What is the benefit of HyperKit?
HyperKit is thinner than VirtualBox and VMWare fusion, and the version we include is customized for Docker workloads on Mac.
Why is com.docker.vmnetd still running after I quit the app?
The privileged helper process com.docker.vmnetd is started by launchd andruns in the background. The process does not consume any resources unlessDocker.app connects to it, so it’s safe to ignore.
Windows FAQs
Can I use VirtualBox alongside Docker Desktop?
Yes, you can run VirtualBox along with Docker Desktop if you have enabled the Windows Hypervisor Platform feature on your machine.
Why is Windows 10 required?
Docker Desktop uses the Windows Hyper-V features. While older Windows versions have Hyper-V, their Hyper-V implementations lack features critical for Docker Desktop to work.
Can I install Docker Desktop on Windows 10 Home?
If you are running Windows 10 Home (starting with version 1903), you can install Docker Desktop for Windows with the WSL 2 backend.
Can I run Docker Desktop on Windows Server?
No, running Docker Desktop on Windows Server is not supported.
How do I run Windows containers on Windows Server?
You can install a native Windows binary which allows you to develop and runWindows containers without Docker Desktop. For more information, see the tutorial about running Windows containers on Windows Server inGetting Started with Windows Containers.
Why do I see the Docker Desktop Access Denied error message when I try to start Docker Desktop?
Docker Desktop displays the Docker Desktop - Access Denied error if a Windows user is not part of the docker-users group.
If your admin account is different to your user account, add the docker-users group. Run Computer Management as an administrator and navigate to Local Users* and Groups > Groups > docker-users.
Right-click to add the user to the group. Log out and log back in for the changes to take effect.
Why does Docker Desktop fail to start when anti-virus software is installed?
Some anti-virus software may be incompatible with Hyper-V and Windows 10 builds which impact DockerDesktop. For more information, see Docker Desktop fails to start when anti-virus software is installed.
Can I change permissions on shared volumes for container-specific deployment requirements?
Docker Desktop does not enable you to control (chmod)the Unix-style permissions on shared volumes fordeployed containers, but rather sets permissions to a default value of0777(read, write, execute permissions for user and forgroup) which is not configurable.
For workarounds and to learn more, seePermissions errors on data directories for shared volumes.
Docker Qcow2 Vs Raw Dog Food
How do symlinks work on Windows?
Docker Desktop supports two types of symlinks: Windows native symlinks and symlinks created inside a container.
The Windows native symlinks are visible within the containers as symlinks, whereas symlinks created inside a container are represented as mfsymlinks: target=”blank” rel=”noopener” class=””}. These are regular Windows files with a special metadata. Therefore the symlinks created inside a container appear as symlinks inside the container, but not on the host.
desktop, mac, windows, faqsHey there,
Docker Qcow2 Vs Raw Download
I am having a problem with my images of opennebula and therefore I’m opening a new topic. Hope you don’t mind. I will tell you the problem now…
I was going to use a qcow2 image for a personal image but I ran into some problems with KVM since it didn’t want to recognize the max-size as the actual size of the image so I changed to RAW and I continued and for now I think my image is ready to be used for Opennebula but upon testing it I ran into the problem of space since RAW occupied too much space and was killing the space in the datastore of the frontend and as for now cannot add more space to it, so I decided to change again to qcow2 and save some space. Now I wanted to create the image and the template. So I performed onetemplate and oneimage and the image says rdy and the template didn’t run into any problem but it was during the onetemplate instantiate that I ran into the problem and I put the resume of the log.
Thu Apr 16 15:35:19 2015 [Z0][ReM][D]: Req:5904 UID:0 VirtualMachinePoolInfo invoked , -2, -1, -1, -1
Thu Apr 16 15:35:19 2015 [Z0][ReM][D]: Req:5904 UID:0 VirtualMachinePoolInfo result SUCCESS, '<VM_POOL>4</…'
Thu Apr 16 15:35:20 2015 [Z0][ReM][D]: Req:6256 UID:0 VirtualMachinePoolInfo invoked , -2, -1, -1, -1
Thu Apr 16 15:35:20 2015 [Z0][ReM][D]: Req:6256 UID:0 VirtualMachinePoolInfo result SUCCESS, '<VM_POOL>4</…'
Thu Apr 16 15:35:26 2015 [Z0][TM][D]: Message received: TRANSFER SUCCESS 8 -
Thu Apr 16 15:35:26 2015 [Z0][VMM][D]: Message received: LOG I 8 ExitCode: 0
Thu Apr 16 15:35:26 2015 [Z0][VMM][D]: Message received: LOG I 8 Successfully execute network driver operation: pre.
Thu Apr 16 15:35:28 2015 [Z0][VMM][D]: Message received: LOG I 8 Command execution fail: cat << EOT | /var/tmp/one/vmm/kvm/deploy ‘/var/lib/one//datastores/100/8/deployment.0’ ‘172.18.10.8’ 8 172.18.10.8
Thu Apr 16 15:35:28 2015 [Z0][VMM][D]: Message received: LOG I 8 error: Failed to create domain from /var/lib/one//datastores/100/8/deployment.0
Thu Apr 16 15:35:28 2015 [Z0][VMM][D]: Message received: LOG I 8 error: internal error: process exited while connecting to monitor: qemu-system-x86_64: -drive file=/var/lib/one//datastores/100/8/disk.0,if=none,id=drive-ide0-0-0,format=qcow2,cache=none: could not open disk image /var/lib/one//datastores/100/8/disk.0: Could not open ‘/var/lib/one//datastores/100/8/disk.0’: Is a directory
So the VM shows fail; before I tried and I discovered I had to change the driver used in the image from the raw default to qcow2, so I changed and I was hopeful that it was the only problem, but the problem continued. Looking into it, it seems the problem is the process for qemu-system, it says the disk.0 is a directory, I went to the host and checked if this was indeed a directory and I found that it was and inside it there was the qcow2 image in question. So, I’m thinking it might be a problem with the parameters and how they are sent. Some important things to notice is that the datastore that I’m currently using is a ssh one (because I was thinking of continuing with raw and preferred the I/O that you claim) but I saw that you have a specific one for qcow2 in the documentation but I’m not really sure how to deploy it.
In short, I need to know if there’s a fix for this and what steps should I follow if any. Thanks in advance for all the suport. Regards!