Microsoft have their own Linux distribution:
The installation is command-line only (it’s for Cloud developers) but the system is very light indeed, more so than vanilla Arch Linux.
It’s pretty solid in respect of security too: CBL-Mariner/security-features.md at 1.0 · microsoft/CBL-Mariner · GitHub
Documentation here: CBL-Mariner/README.md at 1.0 · microsoft/CBL-Mariner · GitHub
Download link for v1.0: https://osrelease.download.prss.microsoft.com/pr/download/Mariner-1.0-x86_64.iso