Enable auth-service/api-gateway on production, build their images in CI

apps/auth-service/migrations/001_auth_user.sql

@@ -0,0 +1,7 @@
+CREATE TABLE IF NOT EXISTS auth_user (
+    id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+    username text UNIQUE NOT NULL,
+    password_hash text NOT NULL,
+    role text NOT NULL CHECK (role IN ('user', 'admin')),
+    created_at timestamptz NOT NULL DEFAULT now()
+);