The image does not need to change, all you change is the port mapping. Just like before! Except now the app is running in its own container, completely isolated, and we can run whatever version of Node we want in the container, with all the benefits Docker gives us.įor example you can remove the container and run it on port 80 instead of 3000, with: docker run -d -p 80:3000 -name node-app examplenode Now you can see the image running in Docker Desktop:Īnd you can click the “Open in browser” button to open the app running on port 3000:

Now we can run a container from the image: docker run -d -p 3000:3000 -name node-app examplenode It’s important to note that after you first download a base image like the node one we use here, that will be cached locally, so you don’t need to download it again and the image building process will be much faster. It will take a while to download the Node image and run npm install, then you’ll get a successful message. Run the command docker build -t examplenode. dockerignore file and add node_modules inside it, to make Docker ignore this folder completely. This allows Node.js to get excellent performance based on the architectures of many Internet applications Node.js is a software system designed for writing highly-scalable internet applications, notably web servers. You can freely delete the node_modules folder that now contains the Express library and its dependencies, but you can also create a. Node.js on Windows and Azure Node.js is a server-side JavaScript environment that uses an asynchronous event-driven model.

Create a Dockerfile file in the same folder, with no extension (not Dockerfile.txt).

Stop this process and let’s create a Docker Image from this.Īll you need are the app.js, package.json and package-lock.json files.Īnd the Dockerfile. Now you can run node app.js and make sure it works:

Hello world node js windows