Docker for Windows now runs on Windows Home

Docker for Windows used to require Hyper-V and Windows Professional. Now, you can do basic software development on Windows Home. Here’s the story.

I got hold of some older 4GB Windows convertible laptop. Unfortunately, it won’t run Linux in any useful way. In recent years, I did not really care for Windows a lot, apart from the usual „fix your parent’s gear for christmas“ routine. Looking for uses case it would possibly cover, I found Windows has improved quite a lot.

Windows 10 May 2020 Update (also known as version 2004) introduces improvements to the „Windows Sub System For Linux“ (WSL2). Recent versions of Docker Desktop CE for Windows allow to run based on WSL2. It’s even better than the original version based on Hyper-V.

To run Docker Desktop, you need to install the WSL and „Virtualization Platform“ options in Windows. This requires a reboot. Docker Desktop will ask you to download a special Linux kernel from a Microsoft website. Docker and the Kernel will require an additional reboot. Microsoft promises that the manual kernel install is a one-time issue. Future kernel releases will be published via Windows Updates.

Now why bother? With the latest Windows improvements, I can keep most of my development workflows when switching to a tiny, low-powered device which I don’t especially care for – think of spare time while traveling by train or some free time project while laying in the hammock. There’s no way I would use my bigger, more expensive equipment in such situations.

The new optional Windows Terminal is available both from the Microsoft website and from their App Store. It’s free and as close as you can get to a native KDE Konsole or Gnome Terminal. It’s not as awkward as putty nor as ugly as the classic cmd or Power Shell. Paired with Windows‘ posix-like ssh client suite, there’s little difference too remote sessions from Linux desktops .

Visual Studio Code feels exactly the same on both Linux and Windows platforms. It allows to edit code directly inside a runtime container. No need for rsync workarounds or push cycles. Keeping everything in the containers also greatly reduces the time to recover from a full reset.

In case you didn’t know, Docker Desktop has some builtin Kubernetes option. This allows development to be even closer to cloud/production scenarios. However, on a 4GB device, don’t expect too much.

The Windows Store now includes some FOSS software, even some KDE for Windows gadgets. Still no Firefox, Thunderbird, Chrome / Chromium … Microsoft has announced they will release some apt/zypper like commandline software installer later this year. Let’s hope that gets adopted more widely.

Windows Store offers some mainstream linux distributions like openSUSE Leap or ubuntu to run on top of WSL/WSL2. I have decided to postpone experimenting with these. Microsoft has announced they want to enable true, builtin capabilities for graphic applications on X/Wayland. I will give this a try when the time is right. It might also make sense to drop Docker Desktop for some podman or other runtime running inside such a linux platform. But for now, that’s out of scope.

While I’m still not ready to embrace Windows as a first-class development platform, I must concede it has become a viable option.

Update 2020/10: I just read an article on Medium which I totally agree with:

They also point out what I am currently doing, using WSL2, docker desktop (with Kubernetes) and VS Code for an integrated environment.