Deploy hooks

template/{{ part_dir }}/Makefile.jinja

@@ -1,6 +1,9 @@
 COMPOSE := docker compose{% if layout == 'part' %} --project-directory ..{% endif %}
+{% if serve != 'api' %}IMAGE := {{ project_slug }}/frontend
+{% endif %}changed = ! git diff --quiet $(1) -- $(2) 2>/dev/null
+stamp = { git update-ref $(1) HEAD 2>/dev/null || true; }
 
-.PHONY: {% if layout == 'root' %}env recreate rebuild restart logs down {% endif %}fmt check build dev
+.PHONY: {% if layout == 'root' %}env recreate rebuild restart logs down deploy {% endif %}fmt check build pre-deploy post-deploy dev
 
 fmt:
 	bun run fix
@@ -13,6 +16,14 @@ build:
 {% if serve == 'api' %}	$(COMPOSE) run --rm frontend-dev sh -c "bun install && bun run build"
 {% else %}	$(COMPOSE) build frontend
 {% endif %}
+pre-deploy:
+	@if $(call changed,refs/deploy/frontend,.) || {% if serve == 'api' %}! test -d build{% else %}! docker image inspect $(IMAGE) >/dev/null 2>&1{% endif %}; then \
+		$(MAKE) build && $(call stamp,refs/deploy/frontend); \
+	fi
+
+post-deploy:
+	@:
+
 dev:
 	bun run dev
 {% if layout == 'root' %}
@@ -34,4 +45,8 @@ logs:
 
 down:
 	$(COMPOSE) down
+
+deploy: pre-deploy
+	$(COMPOSE) up -d
+	$(MAKE) post-deploy
 {% endif %}

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

@@ -9,4 +9,6 @@ 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.
 
+To deploy, `git pull && make deploy`. It runs `make pre-deploy`, which rebuilds the image only when something in the repository changed, then `docker compose up -d`. A deploy system with its own `up` step calls `make pre-deploy` before it and `make post-deploy` after. What was built is remembered as `refs/deploy/*` in the clone.
+
 `make dev` runs the Vite dev server on the host, `make fmt` formats, `make check` runs svelte-check and the linter.