Use docker to deploy simple configuration of Nestjs

There are many benefits of using docker to deploy nestjs:

1. Portability : Docker containers provide a lightweight, portable deployment method. Deploying NestJS applications using Docker ensures consistent operation across different environments and avoids deployment errors due to dependencies or configuration issues.

2. Environment isolation : Docker containers provide an isolated running environment for each application. This means that your NestJS application is isolated from the host system and other containers while running in the container. This avoids problems caused by differences in system environments and increases application security.

3. Simplify the deployment process : Using Docker for deployment can simplify the deployment process. Once a NestJS application is packaged into a Docker image, it can be easily deployed on different hosts without having to manually set up various dependencies and configurations. This saves time and effort and reduces deployment complexity.

4. Scalability : Docker makes it easy to scale applications when needed. You can use tools such as Docker Compose or Kubernetes to manage the deployment of multiple containers to achieve horizontal expansion, load balancing, container orchestration and other functions.

5. Version control : After packaging the NestJS application into a Docker image, version control and rollback can be easily performed. Each image has a unique identifier, and versions can be easily switched or rolled back when needed.

6. Ecosystem support : Deploying NestJS applications using Docker gets extensive ecosystem support. Docker Hub provides a large number of application images and basic environments to speed up the development and deployment process. In addition, Docker provides many tools and plugins for monitoring, managing and scaling applications.

To deploy a NestJS application using Docker, first configure the Dockerfile

Create a file called in the root directory of your NestJS project Dockerfileand add the following content:

# 使用 Node.js 官方镜像作为基础镜像
FROM node:latest

# 设置工作目录
WORKDIR /usr/src/app

# 将 package.json 和 package-lock.json 复制到工作目录
COPY package*.json ./

# 安装依赖
RUN npm install

# 将项目文件复制到工作目录
COPY . .

# 暴露应用端口
EXPOSE 3000

# 运行 NestJS 应用
CMD [ "npm", "run", "start:prod" ]

Build the image: Execute the following command in the project root directory to build the NestJS application as a Docker image

docker build -t your-image-name .

Replace your-image-namewith the name of the image you want to set.

Run the container in the terminal: Use the following command to run your NestJS application container in Docker

docker run -p 3000:3000 -d your-image-name

This will run your NestJS application container locally on port 3000 with the container running in the background ( -dparameters).

Now, your NestJS application is running in the Docker container. You can http://localhost:3000access your application by visiting .

If you use other services such as databases, you can add corresponding configurations to the Dockerfile and manage the deployment of multiple services through Docker Compose. This enables more complex application deployment and management.

Please ensure that sensitive information is properly configured and handled in Docker to ensure security