Containers are more than "just" running a binary now though. If your "deploy" script is:

    docker build -t my-app . && docker push my-app

Then all of a sudden it's a reproducible, reusable deployment script that works for any language, any application, and that any other dev on your team can run (as opposed to playing "which flavor of coreutils did they use when they wrote this?"). It's provider agnostic - you can run it on DO, AWS, GCP, whatver. You get free rolling/blue green/canary/whatever you prefer deployments, a "basic" cross compilation out of the box. They're not magic, but they are an excellent abstraction, despite the warts.