just: add db{start,stop} targets [skip ci]

justfile

@@ -28,3 +28,18 @@ dev: build run
 # generate code based on ent schemas.
 gen:
 	go generate -v ./ent
+
+# start pg.
+dbstart:
+	podman run \
+	--name pg \
+	--rm \
+	-it \
+	-e POSTGRES_PASSWORD=postgres \
+	-v $PWD/tmp/db:/var/lib/postgres/data \
+	-p 127.0.0.1:5432:5432 \
+	docker.io/library/postgres:15.2-alpine3.17
+
+# stop pg.
+dbstop:
+	podman stop pg