added mongodb with docker image and integration in nest server

docker/docker-compose.yml

+services:
+  mongo:
+    image: mongo
+    container_name: mongo
+    ports:
+      - 27017:27017
+    restart: always

package.json

@@ -27,7 +27,9 @@
   "dependencies": {
     "@nestjs/common": "^9.0.0",
     "@nestjs/core": "^9.0.0",
+    "@nestjs/mongoose": "^9.2.1",
     "@nestjs/platform-express": "^9.0.0",
+    "mongoose": "^6.7.2",
     "reflect-metadata": "^0.1.13",
     "rimraf": "^3.0.2",
     "rxjs": "^7.2.0"

src/app.controller.spec.ts

-import { Test, TestingModule } from '@nestjs/testing';
-import { AppController } from './app.controller';
-import { AppService } from './app.service';
-
-describe('AppController', () => {
-  let appController: AppController;
-
-  beforeEach(async () => {
-    const app: TestingModule = await Test.createTestingModule({
-      controllers: [AppController],
-      providers: [AppService],
-    }).compile();
-
-    appController = app.get<AppController>(AppController);
-  });
-
-  describe('root', () => {
-    it('should return "Hello World!"', () => {
-      expect(appController.getHello()).toBe('Hello World!');
-    });
-  });
-});

src/app.controller.ts

-import { Controller, Get } from '@nestjs/common';
-import { AppService } from './app.service';
-
-@Controller()
-export class AppController {
-  constructor(private readonly appService: AppService) {}
-
-  @Get()
-  getHello(): string {
-    return this.appService.getHello();
-  }
-}

src/app.module.ts

 import { Module } from '@nestjs/common';
-import { AppController } from './app.controller';
-import { AppService } from './app.service';
+import { MongooseModule } from '@nestjs/mongoose';
+import { mongodb } from './config';
 
 @Module({
-  imports: [],
-  controllers: [AppController],
-  providers: [AppService],
+  imports: [MongooseModule.forRoot(mongodb.uri)],
+  controllers: [],
+  providers: [],
 })
 export class AppModule {}

src/app.service.ts

-import { Injectable } from '@nestjs/common';
-
-@Injectable()
-export class AppService {
-  getHello(): string {
-    return 'Hello World!';
-  }
-}

src/config/config.model.ts

@@ -2,6 +2,11 @@ export interface IServerConfig {
   port: number;
 }
 
+export interface IMongodbConfig {
+  uri: string;
+}
+
 export interface IConfig {
   server: IServerConfig;
+  mongodb: IMongodbConfig;
 }

src/config/config.template.json

 {
   "server": {
-    "port": 0
+    "port": 3001
+  },
+  "mongodb": {
+    "uri": "mongodb://localhost:27017/internship-manager"
   }
 }

src/config/index.ts

@@ -4,4 +4,5 @@ import { IConfig } from './config.model';
 const config = _config as IConfig;
 
 export const server = config.server;
+export const mongodb = config.mongodb;
 export default config;