Ubuntu 20.04 in WSL 2

ubuntu-20.04-wsl2.ps1

## change to your username
$user="wsl-user"

# download latest 20.04 release
curl --location `
  --remote-name `
  "https://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-amd64-wsl.rootfs.tar.gz"
 
# import into WSL 2
wsl --import `
  "Ubuntu-20.04" `
  "C:\ProgramData\Ubuntu2004" `
  "focal-server-cloudimg-amd64-wsl.rootfs.tar.gz"

# set as default distro
wsl --set-default "Ubuntu-20.04"

# setup linux user
wsl sh -c "`
  addgroup '${user}' \\`
  && adduser --uid '1000' \\`
    --ingroup '${user}' \\`
    '${user}' \\`
  && usermod --append \\`
    --groups 'admin' \\`
    '${user}' `
"

# setup default WSL 2 user
Get-ItemProperty Registry::HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Lxss\*\ DistributionName `
  | Where-Object -Property DistributionName -eq "Ubuntu-20.04" `
  | Set-ItemProperty -Name DefaultUid -Value 1000