Complete setup for docker. Add readme, and fix some bugs

backend/Dockerfile

@@ -0,0 +1,23 @@
+# Use the official Node.js image as the base image
+FROM node:20
+
+# Set the working directory inside the container
+WORKDIR /usr/src/app
+
+# Copy package.json and package-lock.json to the working directory
+COPY package*.json ./
+
+# Install the application dependencies
+RUN npm install
+
+# Copy the rest of the application files
+COPY . .
+
+# Build the NestJS application
+RUN npm run build
+
+# Expose the application port
+# EXPOSE 3000
+
+# Command to run the application
+CMD ["node", "dist/main"]

backend/src/main.ts

@@ -7,7 +7,6 @@ import AppModule from '@/modules/app';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
-
   app.useGlobalPipes(new ValidationPipe());
   app.useWebSocketAdapter(new WsAdapter(app));
 
@@ -22,4 +21,4 @@ async function bootstrap() {
 
   await app.listen(process.env.PORT ?? 8000);
 }
-bootstrap();
+void bootstrap();

backend/src/modules/app/app.module.ts

@@ -14,7 +14,6 @@ import MessageModule from '@/modules/message';
       load: [config, databaseConfig],
     }),
     TypeOrmModule.forRoot(databaseConfig()),
-
     MessageModule,
   ],
 })

backend/src/shared/gateways/message/message.gateway.ts

@@ -2,16 +2,11 @@ import Message from '@/entities/message';
 import { OnGatewayConnection, WebSocketGateway } from '@nestjs/websockets';
 import { Socket } from 'socket.io';
 
-@WebSocketGateway(8002)
+@WebSocketGateway(8002, { transports: ['websocket'] })
 export class MessageGateway implements OnGatewayConnection {
   private clients: Socket[] = [];
 
-  handleConnection(client: Socket) {
-    this.clients.push(client);
-  }
-
-  sendMessage = (message: Message) => {
-    console.log(message, this.clients.length);
+  handleConnection = (client: Socket) => this.clients.push(client);
+  sendMessage = (message: Message) =>
     this.clients.forEach((client) => client.send(JSON.stringify(message)));
-  };
 }

backend/src/shared/services/message/message.service.ts

@@ -10,7 +10,7 @@ export class MessageService {
     private messageRepository: Repository<Message>,
   ) {}
 
-  getTopOfHistory = () =>
+  getTopOfHistory = (): Promise<Message[]> =>
     this.messageRepository
       .createQueryBuilder('message')
       .orderBy('message.id', 'DESC')