Node.js Web Server Deployed within Docker

Updated Friday, August 24, 2018 by Linode Written by Joe D.

Node.js is a server-side, JavaScript package, often used for various cloud applications. Docker is a container platform. With Docker, users can download applications without the hassle of the installation and configuration process.

Install Docker

These steps install Docker Community Edition (CE) using the official Ubuntu repositories. To install on another distribution, or to install on Mac or Windows, see the official installation page.

1. Remove any older installations of Docker that may be on your system:

   sudo apt remove docker docker-engine docker.io
   

2. Make sure you have the necessary packages to allow the use of Docker’s repository:

   sudo apt install apt-transport-https ca-certificates curl software-properties-common gnupg
   

3. Add Docker’s GPG key:

   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
   

4. Verify the fingerprint of the GPG key:

   sudo apt-key fingerprint 0EBFCD88
   

   You should see output similar to the following:

     
   pub   rsa4096 2017-02-22 [SCEA]
         9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88
   uid           [ unknown] Docker Release (CE deb) 
   sub   rsa4096 2017-02-22 [S]
   
   

5. Add the stable Docker repository:

   sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
   

   Note

   For Ubuntu 19.04, if you get an E: Package 'docker-ce' has no installation candidate error, this is because the stable version of docker is not yet available. Therefore, you will need to use the edge / test repository.

   sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable edge test"
   

6. Update your package index and install Docker CE:

   sudo apt update
   sudo apt install docker-ce
   

7. Add your limited Linux user account to the docker group:

   sudo usermod -aG docker $USER
   

   Note

   After entering the usermod command, you will need to close your SSH session and open a new one for this change to take effect.

8. Check that the installation was successful by running the built-in “Hello World” program:

   docker run hello-world
   

Download the Docker Node.js Server Image

The Docker Hub user page for Linode can be accessed here. Select the server-node-js image for configuration information.

Note

Docker images made for one operating system can be used on servers running a different OS. The server-node-js Ubuntu 14.04 image was tested on Debian 7, Ubuntu 14.04, CentOS 7 and Fedora 21. After Docker installation on CentOS and Fedora, run the sudo service docker start command.

1. Search for linode images:

   docker search linode
   

2. Download the linode/server-node-js image:

   docker pull linode/server-node-js
   

Run the Docker Container, Node.js, and the Web Server

1. Run the Linode container. Forward the Linode’s port 80 to port 3000 of the container:

   docker run -d -p 80:3000 linode/server-node-js
   

   Note

   This command runs the docker image as a daemon.

2. Test the server at example.com/test.htm, replacing example.com with your Linode’s IP address. A page with “Test File” should appear.

The Docker Hub image page has information explaining what the Docker image contains.

More Information

You may wish to consult the following resources for additional information on this topic. While these are provided in the hope that they will be useful, please note that we cannot vouch for the accuracy or timeliness of externally hosted materials.

• Linode Docker Hub Page
• Docker Docs
• Docker Try it Tutorial
• Docker Hub

Join our Community

Find answers, ask questions, and help others.

This guide is published under a CC BY-ND 4.0 license.