Is systemd-nspawn something that’s likely to be around in five or ten years? I don’t follow systemd development too closely, so I don’t have a sense if this is common, widely used code or systemd’s take on a Docker competitor.
I found the article pretty compelling, and look forward to trying out the technique.
nspawn has been around for a long time. It’s what we use as an isolated chroot for building Arch Linux packages.