First, download and install arcctl:
https://github.com/architect-team/arcctl
Then, create your first datacenter (if you haven't already):
arcctl apply datacenter local https://raw.githubusercontent.com/architect-team/arcctl/main/__tests__/datacenters/local.yml
Then, start your development server:
arcctl up . --datacenter local
Finally, open up the application at http://app.127.0.0.1.nip.io