Just pull a tarball from a signed URL, install deps, and run from systemd. Rolls out in 30 seconds, remarkably stable. Initial bootstrap of deps/paths is maybe 5 minutes.

So is it 5 minutes or 30 seconds then? And yes, you're missing out.

Docker images come in layers, which may or may not change depending on your release, and may or may not be shared across services.

Read what I wrote. The answer to your question is there.