feat(ci): add PostgreSQL service to workflow configuration

.gitea/workflows/qs.yml

@@ -9,6 +9,20 @@ jobs:
     runs-on: "ubuntu-latest"
     container:
       image: "cimg/openjdk:21.0-node"
+    services:
+      postgres:
+        image: postgres:15
+        env:
+          POSTGRES_DB: lf8_starter_db
+          POSTGRES_USER: lf8_starter
+          POSTGRES_PASSWORD: secret
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd="pg_isready -U lf8_starter"
+          --health-interval=10s
+          --health-timeout=5s
+          --health-retries=3
     steps:
       - name: "Checkout"
         uses: actions/checkout@v3