Init project. Create simple backend. Add postgres in docker

backend/src/configuration/configuration.ts

@@ -0,0 +1,11 @@
+import { TypeOrmModuleOptions } from '@nestjs/typeorm';
+import { IDatabaseConfigKey } from './database';
+
+const config = {};
+
+export type IConfig = typeof config & {
+  [k in IDatabaseConfigKey]: TypeOrmModuleOptions;
+};
+
+const getConfig = () => config;
+export default getConfig;

backend/src/configuration/database.ts

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+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,
+  }),
+);