Containerizing a Node.js Application with Docker

This guide demonstrates how to containerize a simple to-do list manager built with Node.js using Docker. To get started, you'll need to install Docker Desktop, a Git client, and an IDE or text editor. First, clone the application source code from a GitHub repository using the command "git clone https://github.com/docker/getting-started-app.git". Then, navigate to the project directory and view the contents of the cloned repository. Next, create a new file named Dockerfile in the project directory, which contains instructions to build a container image. The Dockerfile includes commands to copy the application code, install dependencies, and set up the environment. After creating the Dockerfile, build the Docker image by running the command "docker build -t getting-started .". Once the image is built, start the container using the command "docker run -d -p 127.0.0.1:3000:3000 getting-started". Finally, access the to-do list app by visiting http://localhost:3000 in your browser.