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83 lines
3.6 KiB
Markdown
83 lines
3.6 KiB
Markdown
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---
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date: "2020-09-22T08:34:30Z"
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thumbnail: 8p-PSHx1R.png
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usePageBundles: true
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tags:
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- docker
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- windows
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- wsl
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- containers
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title: Docker on Windows 10 with WSL2
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---
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Microsoft's Windows Subsystem for Linux (WSL) 2 [was recently updated](https://devblogs.microsoft.com/commandline/wsl-2-support-is-coming-to-windows-10-versions-1903-and-1909/) to bring support for less-bleeding-edge Windows 10 versions (like 1903 and 1909). WSL2 is a big improvement over the first iteration (particularly with [better Docker support](https://www.docker.com/blog/docker-desktop-wsl-2-backport-update/)) so I was really looking forward to getting WSL2 loaded up on my work laptop.
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Here's how.
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### WSL2
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#### Step Zero: Prereqs
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You'll need Windows 10 1903 build 18362 or newer (on x64). You can check by running `ver` from a Command Prompt:
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```powershell
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C:\> ver
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Microsoft Windows [Version 10.0.18363.1082]
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```
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We're interested in that third set of numbers. 18363 is bigger than 18362 so we're good to go!
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#### Step One: Enable the WSL feature
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*(Not needed if you've already been using WSL1.)*
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You can do this by dropping the following into an elevated Powershell prompt:
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```powershell
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dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart
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```
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#### Step Two: Enable the Virtual Machine Platform feature
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Drop this in an elevated Powershell:
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```powershell
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dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart
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```
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And then reboot (this is still Windows, after all).
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#### Step Three: Install the WSL2 kernel update package
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Download it from [here](https://wslstorestorage.blob.core.windows.net/wslblob/wsl_update_x64.msi), and double-click the downloaded file to install it.
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#### Step Four: Set WSL2 as your default
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Open a Powershell window and run:
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```powershell
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wsl --set-default-version 2
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```
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#### Step Five: Install a Linux distro, or upgrade an existing one
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If you're brand new to this WSL thing, head over to the [Microsoft Store](https://aka.ms/wslstore) and download your favorite Linux distribution. Once it's installed, launch it and you'll be prompted to set up a Linux username and password.
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If you've already got a WSL1 distro installed, first run `wsl -l -v` in Powershell to make sure you know the distro name:
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```powershell
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PS C:\Users\jbowdre> wsl -l -v
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NAME STATE VERSION
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* Debian Running 2
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```
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And then upgrade the distro to WSL2 with `wsl --set-version <distro_name> 2`:
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```powershell
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PS C:\Users\jbowdre> wsl --set-version Debian 2
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Conversion in progress, this may take a few minutes...
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```
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Cool!
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### Docker
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#### Step One: Download
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Download Docker Desktop for Windows from [here](https://hub.docker.com/editions/community/docker-ce-desktop-windows/), making sure to grab the "Edge" version since it includes support for the backported WSL2 bits.
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#### Step Two: Install
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Run the installer, and make sure to tick the box for installing the WSL2 engine.
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#### Step Three: Configure Docker Desktop
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Launch Docker Desktop from the Start menu, and you should be presented with this friendly prompt:
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Hit that big friendly "gimme WSL2" button. Then open the Docker Settings from the system tray, and make sure that **General > Use the WSL 2 based engine** is enabled. Now navigate to **Resources > WSL Integration**, confirm that **Enable integration with my default WSL distro** is enabled as well. Smash the "Apply & Restart" button if you've made any changes.
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### Test it!
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Fire up a WSL session and confirm that everything is working with `docker run hello-world`:
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It's beautiful!
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