Add docker (#18)

Author: Jajared

backend/docker-compose.yml

@@ -0,0 +1,43 @@
+services:
+  gateway-service:
+    build:
+      context: ./gateway-service
+    container_name: gateway-service
+    ports:
+      - '4000:4000'
+    volumes:
+      - ./gateway-service:/app
+      - /app/node_modules
+    depends_on:
+      - questions-service
+      - users-service
+    networks:
+      - backend-network
+
+  questions-service:
+    build:
+      context: ./questions-service
+    container_name: questions-service
+    volumes:
+      - ./questions-service:/app
+      - /app/node_modules
+    env_file:
+      - ./questions-service/.env
+    networks:
+      - backend-network
+
+  users-service:
+    build:
+      context: ./users-service
+    container_name: users-service
+    volumes:
+      - ./users-service:/app
+      - /app/node_modules
+    env_file:
+      - ./users-service/.env
+    networks:
+      - backend-network
+
+networks:
+  backend-network:
+    driver: bridge

backend/gateway-service/.dockerignore

@@ -0,0 +1 @@
+node_modules

backend/gateway-service/Dockerfile

@@ -0,0 +1,20 @@
+# Use an official Node.js runtime as the base image
+FROM node:18-alpine
+
+# Set the working directory in the container
+WORKDIR /app
+
+# Copy the package.json and package-lock.json files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm install
+
+# Copy the rest of the application code
+COPY . .
+
+# Expose the port the app runs on
+EXPOSE 4000
+
+# Start the application
+CMD ["npm", "start"]

backend/gateway-service/package-lock.json

@@ -22,6 +22,7 @@
   "dependencies": {
     "@nestjs/common": "^10.0.0",
     "@nestjs/core": "^10.0.0",
+    "@nestjs/microservices": "^10.4.1",
     "@nestjs/platform-express": "^10.0.0",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.14.1",

backend/gateway-service/package.json

@@ -12,15 +12,15 @@ import { QuestionController } from './question/questions.controller';
         name: 'USER_SERVICE',
         transport: Transport.TCP,
         options: {
-          host: '127.0.0.1',
+          host: 'user-service',
           port: 3001,
         },
       },
       {
         name: 'QUESTION_SERVICE',
         transport: Transport.TCP,
         options: {
-          host: '127.0.0.1',
+          host: 'questions-service',
           port: 3002,
         },
       },

backend/gateway-service/src/app.controller.spec.ts

@@ -3,7 +3,7 @@ import { AppModule } from './app.module';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
-  await app.listen(3000);
-  console.log('Gateway Service is listening on port 3000');
+  await app.listen(4000);
+  console.log('Gateway Service is listening on port 4000');
 }
 bootstrap();

backend/gateway-service/src/app.module.ts

@@ -22,6 +22,7 @@
   "dependencies": {
     "@nestjs/common": "^10.0.0",
     "@nestjs/core": "^10.0.0",
+    "@nestjs/microservices": "^10.4.1",
     "@nestjs/platform-express": "^10.0.0",
     "reflect-metadata": "^0.2.0",
     "rxjs": "^7.8.1"