WSL2（Ubuntu）にDockerをインストールする方法！

$ wsl --install

$ wsl --list --online

インストールできる有効なディストリビューションの一覧を次に示します。
既定の分布は ' * ' で表されます。
 'wsl --install -d <Distro>'を使用してインストールします。

  NAME            FRIENDLY NAME
* Ubuntu          Ubuntu
  Debian          Debian GNU/Linux
  kali-linux      Kali Linux Rolling
  openSUSE-42     openSUSE Leap 42
  SLES-12         SUSE Linux Enterprise Server v12
  Ubuntu-16.04    Ubuntu 16.04 LTS
  Ubuntu-18.04    Ubuntu 18.04 LTS
  Ubuntu-20.04    Ubuntu 20.04 LTS

$ wsl --install -d Ubuntu-20.04

$ wsl -l -v

  NAME            STATE           VERSION
* Ubuntu          Stopped         2
  Ubuntu-20.04    Running         2

$ wsl --set-default Ubuntu-20.04


# 再度確認
$ wsl -l -v

  NAME            STATE           VERSION
* Ubuntu-20.04    Running         2
  Ubuntu          Stopped         2

$ ubuntu2004 config --default-user root

$ apt-get remove docker docker-engine docker.io containerd runc

$ apt-get update

$ apt-get install -y \
    ca-certificates \
    curl \
    gnupg \
    lsb-release

$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

$ echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

$ apt-get update

$ apt-get install -y docker-ce docker-ce-cli containerd.io

$ service docker start

$ docker run hello-world

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
2db29710123e: Pull complete
Digest: sha256:e18f0a777aefabe047a671ab3ec3eed05414477c951ab1a6f352a06974245fe7
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

$ curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

$ chmod +x /usr/local/bin/docker-compose

$ docker-compose -v

docker-compose version 1.29.2, build 5becea4c

$ vi ~/.bashrc

if test $(service docker status | awk '{print $4}') = 'not'; then
        sudo /usr/sbin/service docker start
fi