Override-based compose, profiles in .env, README

template/{{ part_dir }}/{% if layout == 'root' %}README.md{% endif %}.jinja

@@ -0,0 +1,12 @@
+# {{ project_name }}
+
+Runs in Docker, locally the same way as in production. `COMPOSE_PROFILES` in `.env` selects the services that run on this machine. `docker-compose.override.yml` holds what differs between machines: published ports and the aliases on the external `caddy` network.
+
+```sh
+make env
+make recreate
+```
+
+`make env` creates `.env` and `docker-compose.override.yml` from their examples. `make recreate` starts the selected profiles, `make rebuild` builds the image first, `make logs`, `make restart` and `make down` do what they say.
+
+`make dev` runs the Vite dev server on the host, `make fmt` formats, `make check` runs svelte-check and the linter.