How can I use Docker with my Express.js application?

How can I use Docker with my Express.js application?

You can use Docker to containerize your Express.js application, making it easier to deploy and manage. First, create a Dockerfile in your project root.

What should I include in the Dockerfile?

In the Dockerfile, you should specify the base image, copy your application files, install dependencies, and define the command to run your app.

Can you give me an example of a Dockerfile for an Express.js app?

Sure! Here's a simple example:

FROM node:14
WORKDIR /usr/src/app
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 3000
CMD ["node", "app.js"]

How do I build and run the Docker container?

You can build the Docker image with docker build -t my-express-app . and run it using docker run -p 3000:3000 my-express-app.