Init project. Create simple backend. Add postgres in docker

backend/src/configuration/database.ts

@@ -0,0 +1,19 @@
+import { registerAs } from '@nestjs/config';
+import { TypeOrmModuleOptions } from '@nestjs/typeorm';
+
+export const DatabaseConfigKey = 'database';
+export type IDatabaseConfigKey = typeof DatabaseConfigKey;
+
+export default registerAs(
+  DatabaseConfigKey,
+  (): TypeOrmModuleOptions => ({
+    type: 'postgres',
+    host: process.env.DATABASE_HOST,
+    port: +(process.env.DATABASE_PORT ?? 5432),
+    username: process.env.DATABASE_USER,
+    password: process.env.DATABASE_PASSWORD,
+    database: process.env.DATABASE_DATABASE,
+    synchronize: process.env.NODE_ENV !== 'production',
+    autoLoadEntities: true,
+  }),
+);