Update build process

Makefile

@@ -0,0 +1,22 @@
+.DEFAULT_GOAL := build
+
+CARGO ?= cargo
+PODMAN ?= podman
+IMAGE ?= reminder-rs
+
+.PHONY: build prepare test image
+
+# Keep the stages ordered even when make is run with -j.
+build: image
+	$(PODMAN) run --rm -v "$(CURDIR):/mnt" -w /mnt \
+		-e SQLX_OFFLINE=true "$(IMAGE)" cargo deb
+
+image: test
+	$(PODMAN) build -t "$(IMAGE)" .
+
+test: prepare
+	SQLX_OFFLINE=true $(CARGO) test --locked
+
+# Include test-only queries in the metadata used by offline compilation.
+prepare:
+	SQLX_OFFLINE=false $(CARGO) sqlx prepare -- --all-targets --locked