How to install Docker and deploy a LAMP Stack

Updated , by Joe D.

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Docker is a container platform for applications. With Docker, users can download pre-configured apps without the hassle of the installation and configuration process. Docker containers can also build on each other.

How to Install Docker and deploy a LAMP Stack

If you are familiar with Docker containers, also try Linode Images to capture and deploy larger system profiles.

Install Prerequisites

Due to a known issue with the dependencies of the docker .deb, installing docker on a Debian/Ubuntu VM requires an additional step:

  1. Run:

     apt-get install dmsetup && dmsetup mknodes
    

Install Docker

Use the Docker-maintained install script for Debian or Ubuntu. For other operating systems, see the Docker Installation guides.

  1. Run:

    curl -sSL https://get.docker.com/ | sh
    
    Note

    The current version of the docker script checks for AUFS support and displays the warning below if support is not found:

    Warning: current kernel is not supported by the linux-image-extra-virtual package. We have no AUFS support. Consider installing the packages linux-image-virtual kernel and linux-image-extra-virtual for AUFS support. + sleep 10

    This message can be safely ignored, as the script will continue the installation using DeviceMapper or OverlayFS. If you require AUFS support, you will need to configure a distribution supplied or custom compiled kernel.

  2. If necessary, add the non-root user to the “docker” group:

    sudo usermod -aG docker example_user
    

Download the Docker Lamp Image

The Docker Hub user page for Linode can be accessed here. Select the lamp image for configuration information.

  1. Search for linode user images:

    sudo docker search linode
    
  2. Download the linode/lamp image:

    sudo docker pull linode/lamp
    

Run the Docker Container, Apache, and MySQL

When an image downloads, there are no image containers running.

  1. Run, create, or turn on a new container and forward port 80:

    sudo docker run -p 80:80 -t -i linode/lamp /bin/bash
    
    Caution
    This command also changes the terminal prompt to the root user within the new container.
  2. As the container’s root user, start Apache:

    service apache2 start
    
  3. Start MySQL:

    service mysql start
    
  4. Exit the container while leaving it running by pressing ctrl + p then ctrl + q.

  5. Enter the IP address in a web browser to test the site.

    Note
    The website’s root directory is /var/www/example.com/public_html/.

Congratulations, you have installed a configured LAMP stack using Docker!

Where to Find Configuration Settings

The LAMP image was installed using the Hosting a Website guide on a Ubuntu container. The configuration files and settings can be found there, or on the Docker Hub linode/lamp page.

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