If you have Docker running locally, it does a local build and pushes to our registry. If you don't have docker running locally, it launches Docker on our infras

If you have Docker running locally, it does a local build and pushes to our registry. If you don't have docker running locally, it launches Docker on our infrastructure, sends it the context, and does a remote build. You can control this with "fly deploy --remote-only" and "fly deploy --local-only". Don't use both, it might cause a paradox.