Deploy Node.js App (Express or Nest) into AWS ECR and EC2

Deploying a Node.js app into AWS ECR (Elastic Container Registry) and EC2 (Elastic Compute Cloud) is a common practice for hosting web applications in a scalable and reliable environment. In this article, we will guide you through the process of deploying a Node.js app, specifically using the Express or Nest framework, into AWS ECR and EC2.

Prerequisites

Before getting started, make sure you have the following prerequisites:

• An AWS account
• A Node.js app (built using Express or Nest framework)
• Docker installed on your local machine

Step 1: Dockerize Your Node.js App

The first step is to Dockerize your Node.js app. Create a Dockerfile in the root directory of your Node.js app with the following content:

FROM node:14

WORKDIR /usr/src/app

COPY package*.json ./

RUN npm install

COPY . .

EXPOSE 3000

CMD ["npm", "start"]

Once you have the Dockerfile in place, build the Docker image:

docker build -t my-node-app .

Step 2: Push Docker Image to AWS ECR

Login to your AWS account using the AWS CLI:

aws ecr get-login-password --region us-west-2 | docker login --username AWS --password-stdin YOUR_ECR_URI

Tag the Docker image with your ECR repository:

docker tag my-node-app:latest YOUR_ECR_URI/my-node-app:latest

Push the Docker image to your ECR repository:

docker push YOUR_ECR_URI/my-node-app:latest

Step 3: Create and Configure an EC2 Instance

In the AWS Management Console, navigate to EC2 and launch a new EC2 instance. Choose the Amazon Linux 2 AMI and configure the instance with the appropriate security groups, key pairs, and IAM roles.

Step 4: Run Docker Container on EC2 Instance

SSH into your EC2 instance and pull the Docker image from your ECR repository:

docker pull YOUR_ECR_URI/my-node-app:latest

Run the Docker container on the EC2 instance:

docker run -p 3000:3000 YOUR_ECR_URI/my-node-app:latest

Conclusion

You have successfully deployed your Node.js app (Express or Nest) into AWS ECR and EC2. Your app is now running in a containerized environment within the AWS infrastructure, providing scalability, reliability, and security for your application.