feat: 数据库迁移支持

apps/backend/src/data-source.ts

@@ -0,0 +1,20 @@
+import 'reflect-metadata';
+import { DataSource } from 'typeorm';
+import * as dotenv from 'dotenv';
+
+dotenv.config();
+
+export const AppDataSource = new DataSource({
+    type: 'postgres',
+    host: process.env.DATABASE_HOST,
+    port: Number(process.env.DATABASE_PORT ?? 5432),
+    username: process.env.DATABASE_USERNAME,
+    password: process.env.DATABASE_PASSWORD,
+    database: process.env.DATABASE_NAME,
+
+    synchronize: false,
+    logging: false,
+
+    entities: ['dist/**/*.entity.js'],
+    migrations: ['dist/migrations/*.js'],
+});