What would be the correct way to add fish completions?

[tlaerm]

I'm still getting used to the xxh structure and want to add docker completions to my fish. If I just add them to the local .xxh they will not be updated when the upstream changes.

So would I make a plugin that curls https://raw.githubusercontent.com/docker/cli/master/contrib/completion/fish/docker.fish and the one for docker-compose?