バイバイ”でした” LCOW

1 年以上たっちゃったけど、Windows Server 版 Mirantis Container Runtime（MCR） の Experimental 機能、Linux containers on Windows（LCOW）は Experimental のまま開発終了になってました。Windows 版 Docker Desktop Community も Docker Engine 20.10 で Deprecated（廃止、非推奨）。どちらも Experimental 機能としてまだ動くけど（削除はされていない）。

linuxkit/lcow (Archived)
https://github.com/linuxkit/lcow

"LinuxKit based LCOW images

This repository hosts the components to build a LinuxKit based Linux image for Linux Containers on Windows.

Note: LCOW support was experimental and is no longer being developed. This repository is now archived." (24 March 2020)

Docker Desktop は WSL 2 バックエンドでどうぞってことで。

Deprecated Engine Features
Linux containers on Windows (LCOW) (experimental)
https://docs.docker.com/engine/deprecated/#linux-containers-on-windows-lcow-experimental

"Deprecated in Release: v20.10
The experimental feature to run Linux containers on Windows (LCOW) was introduced as a technical preview in Docker 17.09. While many enhancements were made after its introduction, the feature never reached completeness, and development has now stopped in favor of running docker natively on Linux in WSL2."

このページの以前のタイトルは「Linux Containers on Windows」で Windows Server ベースの記述だったけど、その後、 Windows 10 の内容に差し替えられた。Deprecated の件は反映されていない。

Linux containers on Windows 10 (09/17/2019)
https://docs.microsoft.com/en-us/virtualization/windowscontainers/deploy-containers/linux-containers