How to use Docker to quickly deploy a development environment on Linux?

How to use Docker to quickly deploy a development environment on Linux

With the rapid development of software development, the deployment of development environment has become an important issue. The traditional method often requires manual installation and configuration of various dependencies, which is time-consuming and energy-consuming. Using Docker can greatly simplify the deployment process of the development environment and improve development efficiency. This article will introduce how to use Docker to quickly deploy a development environment, taking the Linux system as an example.

1. Installing Docker
   First, we need to install Docker on the Linux system. There are many ways to install Docker. Here we use the most common apt package manager for installation. Open the terminal and run the following command:

   $ sudo apt update
   $ sudo apt install docker.io

   After the installation is complete, you can run the docker --version command to verify whether Docker is installed successfully.

2. Get the image
   Docker uses images to create containers, we need to obtain the required images first. Taking the PHP development environment as an example, we can use the officially provided PHP image. Open a terminal and run the following command to obtain the image:

   $ sudo docker pull php:latest

   This will download the latest version of the PHP image from Docker Hub.

3. Create container
   After obtaining the image, we can use the image to create a container. Open the terminal and run the following command:

   $ sudo docker run -it --name myphpcontainer -v /path/to/project:/var/www/html php:latest

   In the above command, we used the docker run command to create a container named myphpcontainer. The -it parameter is used to specify interactive running, the --name parameter is used to specify the name of the container, the -v parameter is used to transfer the project on the host The path is mounted to the /var/www/html path inside the container to achieve file sharing. php:latest indicates using the latest version of the PHP image.

4. Configuring the development environment
   After the container is created, we need to enter the container to configure the development environment. Run the following command:

   $ sudo docker exec -it myphpcontainer bash

   In the above command, we use the docker exec command to enter the container and start a new terminal session. The -it parameter is used to specify interactive operation, myphpcontainer indicates the name of the container, and bash indicates using Bash as the default Shell.

Inside the container, we can install the required packages and dependencies. Taking the installation of Composer as an example, run the following command:

$ apt update
$ apt install curl php-cli php-zip unzip
$ curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

In the above command, we use the apt command to install the required dependencies, and then use the curl command to download Composer Install the script and execute the script through the php command to install.

5. Start the development environment
   After completing the configuration of the development environment, we can start the web server for development and testing. You can use Apache or Nginx as the web server. Here we take Apache as an example. Run the following command inside the container:

   $ apt install apache2
   $ cd /etc/apache2/sites-available
   $ cp 000-default.conf mysite.conf
   $ a2ensite mysite.conf
   $ service apache2 restart

   In the above command, we installed Apache2 using the apt command, and then configured a new virtual host. Finally, restart the Apache service through the service command.

So far, we have successfully used Docker to quickly deploy a development environment on a Linux system. You can visit http://localhost through your browser to view the project running status.

Summary:
Docker is a powerful tool that can make the deployment of development environments simple and efficient. By using Docker, we can quickly obtain, configure and start the development environment, improve development efficiency, and reduce problems caused by inconsistent environments. I hope this article will help you understand how to use Docker to quickly deploy a development environment on Linux.

Reference materials:

• Docker official documentation: https://docs.docker.com/
• PHP official image: https://hub.docker. com/_/php

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