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WSL 2 uses an actual Linux kernel that allows Linux containers. If you want Docker to work on Windows and WSL 2, installing Docker Desktop is most likely the way to go. If you went with the default docker socket location of /var/run/docker.sock instead of the shared socket directory of /mnt/wsl/shared-docker as detailed above, then the script can be something like this: You may choose whatever location you would like for your docker logs, of course. Unless I missed a step above, when I got to "update-alternatives --config iptables" it's still broke on my system. in the regexp as such: Thanks Nicolas. First, open the container host you want to manage, and in the Tools pane, select the Containers extension. If, however, when you launch WSL, you are still root, then set your new user as the default. Thanks! But if the above commands fail to access the package servers, it may be something unique to your network, or your firewall or anti-malware software. Why do we place the docker socket in the \mnt\wsl folder? How to copy Docker images from one host to another without using a repository. I suspect that most, however, will want to switch to iptables legacy. Docker Desktop gives you access to both Windows Containers and Linux containers, by leveraging WSL 2. Also note that a boot command in /etc/wsl.conf is only available on Windows 11. If it returns "Yes, that ID is free" then you are good to go, with the following: Or, if groupmod is available (which it is on Fedora, Ubuntu, and Debian, but not Alpine unless you sudo apk add shadow), this is safer: Once the group id has been changed, close the terminal window and re-launch your WSL distro. and run docker build with --add-host=host.docker.internal:host-gateway, I can see that I can ping the host from the container, but the container cannot seem to ping any external ip, even the cloudflare dns 1.1.1.1 or google's 8.8.8.8. For anyone struggling with using this behind a proxy, I found the only configuration file that dockerd looks at is /etc/environment, so set the likes of HTTP_PROXY, HTTPS_PROXY, and NO_PROXY in there before starting Docker. Yes. Hi, followed everything but on doing sudo dockered getting this error. With this newly-configured DNS resolver (in this case, pointing directly to Cloudflare's DNS server) you can try upgrading packages again. Docker Desktop is not supported on Windows Server 2019 OS host, Docker Desktop is only supported on Windows 10 host, Mac and planned for Linux Desktop ( there are kernel difference b/w Windows server host and Windows 10 desktop) Big Thanks to Jonathan Bowman for his article. It will become hidden in your post, but will still be visible via the comment's permalink. The following often works, but is not advisable when launching WSL docker from Windows: Instead of doing the above haphazardly, when launching WSL docker from Powershell, two recommendations: Then point your browser to http://localhost:8080, and happiness will result. Only if you have docker desktop currently installed of course. ){3}[0-9]{1,3}" | grep -v 127.0.0.1 |awk '{ print $2 }' | cut -f2 -d:`, And you get the IP address, as described before, In the Powershell windows of the terminal, you can run the following command I have written about getting Podman to work on WSL 2. I work on client/server software. I receive the same problems, the installation just stops or freezes forever. If not, you can obtain the user id with id -u myusername and check your list of WSL distros with (in Powershell) wsl -l. Then, use the following command in Powershell, but use your WSL distro name in place of "Alpine" and use your user id in place of "1000": Whichever method you use, test by logging out of WSL, and then log back in. I'm currently trying to understand how docker can help me in my daily work. Still had no "update-alternatives" for iptables which I believe is part of the problem I was having with Docker trying to run the "Computer Language Drag Racing" suite. Strange my Debian is so far behind. Constantly learning to develop software. Again, try wsl -l -q to see a list of your WSL distributions if you are unsure which one to use. For example, Windows 11 Home can use up to 128 GB (gigabytes) of RAM, while Windows 11 Pro supports a maximum of 2 TB ( terabytes) of RAM. In WSL2 change the service config to additionally expose the Docker Daemon on localhost: On Windows create a new context for the WSL host via PowerShell: Now you can easily run Windows and Linux containers simultaneously without switching like in Docker Desktop: You may not even need Docker Desktop if youre a poweruser not using the GUI. Reading about what goes on under the hood is an entertaining and informative endeavor, as well. Using Kolmogorov complexity to measure difficulty of problems? For some reason I can't get internet connection inside the container. Isn't the deamon running inside wsl in any case? The vague complaints of the Copilot plaintiffs are nothing compared to the damage to free software and human progress if they won. Ip stuff port forwarding etc. (Depending on your network configuration, you may instead need to access this through http://[WSL IP Address]:8080 which should be obtainable with ifconfig or ip addr). dockeraccesshelper is an open source PowerShell module to allow non-privileged users to connect to the Docker Service. Note that the above steps involving the docker group will need to be run on any WSL distribution you currently have or install in the future, if you want to give it access to the shared Docker socket. Thanks for keeping DEV Community safe. If you only run one it doesn't hurt, but you could use Docker's default location, /var/run/docker/containerd/containerd.sock. A little more suggestion about TCP access, as well. (Optional) If your container is a Web App or API, open a browser in Windows to check you can access it. For more information and to change your decision later, see, # Optionally enable required Windows features if needed, https://download.docker.com/win/static/stable/x86_64/docker-20.10.13.zip, "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu, 's/\ -H\ fd:\/\//\ -H\ fd:\/\/\ -H\ tcp:\/\/127.0.0.1:2375/g', mcr.microsoft.com/windows/nanoserver:1809. Weird -- containerd is already installed on mine; I can update the instructions accordingly. update-alternatives: error: no alternatives for iptables. For a variety of reasons, network connectivity issues can happen with WSL 2, and tweaking the DNS settings often resolves these problems in my experience. The application data stays neatly within the container, instead of on the host file system. See more details about the Docker subscription model here. Exactly, this is very unfortunate but currently only linux has a standalone daemon, Windows and MacOS have to install Docker Desktop to get a native daemon. We can continue to develop with containers without Docker Workstation. There is some socket magic that I don't know by memory because I just keep the command in a gist. rev2023.3.3.43278. Step-2: Enable Docker Running Environment 1. Docker Desktop delivers the speed, choice and security you need for designing and delivering these containerized applications on your desktop. While Docker Desktop on Windows can be run without having Administrator privileges, it does require them during installation. You can just download them, put them in your PATH, register the Docker Daemon as a service, start it and run your Windows containers like you're used to. It seems like there is another package that adds the iptables-legacy links. Stefan Scherer is maintaining the project docker-cli-builder on GitHub where we can download the docker.exe command in standalone : Once done, logout from your session and log again Hello, there is a small error in regex provided to get the host's IP address; if the output of ifconfig eth0 returns this: it will match the line starting with "TX packets too". To get to a Linux directory while in Powershell, try something like. - It uses the same technology as Remote Desktop (think VNC), except it only does it for a single Window (and it's child windows). For that you need to execute the following PowerShell commands as admin: Docker then greets you with Hello from Docker!. On your Debian install, what is the result of dpkg -S /usr/sbin/iptables-legacy? For this please install the Windows Store Version of WSL and afterwards enable systemd in the distro settings and reboot the WSL distro.. Now re-enter WSL to have systemd available and install Docker normally like explained in the docs. can you provide an example? Ive been running WSL on potato laptops and now I high end one with no heat issues at all. It can be any group ID that is not in use. After walking through the steps in this article, you should now have a working and potentially auto-launched dockerd, shared Docker socket, and conveniently configured docker command. If using the script earlier to launch dockerd, then $DOCKER_HOST will be set, and future invocations of docker will not need an unwieldy -H unix:///mnt/wsl/shared-docker/docker.sock. Privacy Policy, This website uses cookies and Google Analytics to ensure you get the best experience on our website. Here is what I get: $ update-alternatives --config iptables For instance, VSCode supports docker in WSL 2. You are at the right place. I do have one question though. The service (dockerd) and client (docker) communicate over a socket and/or a network port. One mistake and you can cause irreparable damage to your Windows installation. By default, non-privileged Windows users cannot reach the Docker Service. You can skip this step, and proceed to updating packages and testing network connectivity, below. I'll share later in a response to this comment. It might be worth mentioning that as of a few months ago, the default WSL2 install (Ubuntu) can be configured to support systemd with a two-line config file. Even pull command comes up with error For instance, you may want to create a script ~/bin/docker-service so that you can run docker-service only when you want, manually. Call me stupid, but I think, this was one of my many attempts to get this working. If you want Docker to work on Windows and WSL 2, installing Docker Desktop is most likely the way to go. DEV Community A constructive and inclusive social network for software developers. Hi Pawel, thank you for your feedback. My goal is to use the docker-cli in Windows (docker.exe), but using Linux containers, without the installation of Docker Desktop. Full-Stack Developer at Elliptic Marketing LLC. I'm curious why you'd use a custom script to start dockerd rather than just using service docker start? If you only plan on using one WSL distro, this next step isn't strictly necessary. Note that Docker Desktop is only free individuals or for small companies. host="tcp://169.254.255.121:2375" Thank you! For peace of mind, you can double-check: something like sudo -k ls -a /root should still require a password, unless the password has been entered recently. Thanks so much for this @jonathan Bowman, was really helpful, don't forget to do another article on installing docker-compose on a WSL Distro without passing through Docker Desktop, might be minimal but it would be a decent supplement to this awesome article of yours.