> there is no ... service management to worry about

Service management:

    systemctl start service.app

or

    docker run --restart=unless-stopped --name=myservice myservice:version

If it isn't written as a service, then it doesn't need management. If it is written as a service, then service management tools make managing it easy.

> there is no graceful shutdown ... to worry about

Graceful shutdown:

    kill -9

or

    docker kill -9 myservice

If your app/service can't handle that, then it's designed poorly.