I tried using Docker Desktop for Windows on Windows 10 Home


Hello. This is Hasegawa. Posted as an article on Yayoi Advent Calendar 2020.

As a personal hobby, I tried using Docker Desktop for Windows on Windows 10 Home at home. This time, I wrote an article about preparations for using Docker Desktop for Windows and impressions of using it.

Windows 10 environment at home

・ Windows 10 Home Edition ・ 64-bit version (* WSL cannot be used with 32-bit version!)

How I decided to use it

Originally, I deployed a web application on Google Cloud Platform (GCP) for the purpose of studying technology. At that time, I wanted to use Docker, which is a trend (?) In recent years.

Since Windows 10 on my home PC is a "Home" edition, I can't use Hyper-V. I did a little research on how to use Docker on Windows 10 Home, but I thought that "environment construction seems to be a little troublesome ...", and there was a section that I was a little shy of.

In my lazy ear, "From Windows version 2004, ** WSL2 ** and ** Docker Desktop for Windows ** can be used on Windows 10 Home. You can use it without Hyper-V." Information has jumped in. [^ 1] "I have no choice but to try this!"

* What is WSL2?

Abbreviation for Windows Subsystem for Linux 2. It is a mechanism to run Linux on Windows.

The differences between WSL1 and WSL2 are described in detail in the following Microsoft documentation. https://docs.microsoft.com/ja-jp/windows/wsl/compare-versions

[^ 1]: WSL2 is also available in version 1903/1909 with the cumulative update.


To put it briefly, Docker Desktop for Windows is ready to use after the following preparations.

  1. Windows 10 version upgrade
  2. Install Docker Desktop for Windows
  3. Installation of WSL2

1. Windows 10 version upgrade

WSL2 is available from Windows 10 version "2004". [^ 1] I'm lazy, and I've left the update for a long time, so the version remained "1909". When I checked "Settings"-> "Update and Security"-> "Windows Update", I was able to get a new version of Windows, so I updated it without checking it very well. After updating, when I checked the version of Windows, it was "20H2". ** "What? What is H2? Hydrogen ...?" ** After a little research, it was Windows 10 October 2020 Update ... In other words, it is a newer version than "2004". This completes the Windows 10 version upgrade.

2. Install Docker Desktop for Windows

I downloaded and installed Docker Desktop for Windows from the following site. https://hub.docker.com/editions/community/docker-ce-desktop-windows

3. Installation of WSL2

When you launch Docker Desktop for Windows using the previous procedure, the following message will appear ... キャプチャa.PNG "By the way, I didn't have WSL2 installed ..." The order was a little messed up, but I downloaded and installed the "WSL2 Linux Kernel Update Package for x64 Machines" from the following site. https://aka.ms/wsl2kernel

Try using Docker Desktop for Windows


Now that you're ready, start Docker Desktop for Windows. The following screen has been launched. capture_ (5).PNG

This is the screen where a list of running containers is displayed. This is what it looks like now because no container is running. Click "Images" on the left side of the screen to open the following screen. capture_ (6).PNG

A list of Docker images is displayed here. This is what it looks like because there are no images now.

Creating an image

Create the image from the command prompt or Windows PowerShell. For the time being, I wanted to see how it works, so I created the following Dockerfile. Open port 80 and install the Apache and .NET Core SDKs.

FROM centos:7
RUN echo "now building..."
RUN yum -y install httpd
RUN rpm -Uvh https://packages.microsoft.com/config/centos/7/packages-microsoft-prod.rpm
RUN yum -y install dotnet-sdk-3.1

Start a command prompt in the directory where you put the Dockerfile, and execute Docker Build.


Working directory>docker build -t testmycontainer .
[+] Building 1.8s (9/9) FINISHED
 => [internal] load build definition from Dockerfile                                                               0.0s
 => => transferring dockerfile: 32B                                                                                0.0s
 => [internal] load .dockerignore                                                                                  0.0s
 => => transferring context: 2B                                                                                    0.0s
 => [internal] load metadata for docker.io/library/centos:7                                                        1.8s
 => [1/5] FROM docker.io/library/centos:7@sha256:0f4ec88e21daf75124b8a9e5ca03c37a5e937e0e108a255d890492430789b60e  0.0s
 => CACHED [2/5] RUN echo "now building..."                                                                        0.0s
 => CACHED [3/5] RUN yum -y install httpd                                                                          0.0s
 => CACHED [4/5] RUN rpm -Uvh https://packages.microsoft.com/config/centos/7/packages-microsoft-prod.rpm           0.0s
 => CACHED [5/5] RUN yum -y install dotnet-sdk-3.1                                                                 0.0s
 => exporting to image                                                                                             0.0s
 => => exporting layers                                                                                            0.0s
 => => writing image sha256:6c50ce36ff73cec713b16e6384a8cb7d7ce35db507fb92dee249f77f53396bde                       0.0s
 => => naming to docker.io/library/testmycontainer                                                                 0.0s

If you check the list of images with Docker Desktop for Windows ... capture_ (7).PNG

I was able to confirm that the image was created.

Start container

I would like to create a container from the image I created earlier and execute it. When you move the cursor to the line of the image name, the "RUN" button will be displayed. Click it. capture_ (8).PNG

Then, the container name and port selection screen will be displayed. Enter it and click "RUN". capture_ (9).PNG

Then click "Containers/Apps" on the left side of the screen to check the running containers. capture_ (4).PNG

Oh! moving! For the time being, let's check the command with the docker ps command.


Working directory>docker ps
CONTAINER ID   IMAGE                    COMMAND       CREATED         STATUS         PORTS     NAMES
d1eee1f16576   testmycontainer:latest   "/bin/bash"   2 minutes ago   Up 2 minutes>80/tcp    Test

It looks like it's working!

in conclusion

From now on, I think it will be very convenient because I can check if the locally developed program works on Docker even on Windows 10 Home and deploy it in a remote production environment (although it is within the scope of personal play).

When I have time, I would like to keep posting articles such as deployment!

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