[marksomnian]

Adding to some of the other responses, one reason I chose to deploy a SPA I'm working on as a Docker image is atomicity - if I want to deploy a newer version I simply switch out the tag in my container orchestrator's config (Nomad in this case, but the same principles apply to k8s and friends) and it's guaranteed that the new deployment will be pristine, without the risk of leftover files from a rsync or similar - and if I need to roll back I do the exact same.

[Filligree]

There’s value in that, but you don’t need Docker with its related debugging and maintenance overhead to get it. NixOS, among other tools, will do the same thing while constructing a “flat” operating system image.

Anything else, though? There’s got to be more to it than that, or it wouldn’t be as popular as it is.