How does Local interact with existing Docker installs?

I already use Docker for other projects. I’m looking into Local for its convenience: things like updating the site URLs, pushing and pulling to Flywheel, etc. My question is how does Local’s Docker tooling interact with an existing install? Does it install its own copy?

Update: Seems like Local runs its own localized (ha) version of Docker, since my “regular” Docker doesn’t seem to know anything about my Local sites/images/containers.