Tutorial for installing Symfony with Docker: Quickly set up a development environment

Docker tutorial for installing Symfony: quickly setting up a development environment

Introduction:
Symfony is a popular PHP framework for quickly building scalable web applications program. In order to facilitate developers to use Symfony, we can use Docker to quickly build a Symfony development environment. This article will introduce how to install Symfony using Docker and provide specific code examples.

1. Install Docker and Docker Compose
First, we need to install Docker and Docker Compose. Docker is a containerization platform that makes it easy to create, deploy, and manage containerized applications. Docker Compose is a tool for defining and running multiple Docker containers.

After installing Docker and Docker Compose, we can start to build the Symfony development environment.

2. Create a Symfony project

1. Create a new folder to store the Symfony project:

   mkdir symfony_project

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2. Enter this folder and create a new Symfony project using Composer:

   cd symfony_project
   composer create-project symfony/website-skeleton .

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This creates a Symfony project named "symfony_project".

3. Create a Docker container

1. Create a folder named "docker" in the root directory of the Symfony project and enter the folder:

   mkdir docker
   cd docker

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2. Create a file named "docker-compose.yml" and add the following content:

   version: '3'
   
   services:
     webserver:
       image: nginx:latest
       ports:
         - 80:80
       volumes:
         - ../public:/var/www/html
       links:
         - php
       networks:
         - symfony
   
     php:
       image: php:7.4-fpm
       volumes:
         - ../:/var/www/html
       networks:
         - symfony
   
   networks:
     symfony:

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Here we are using two containers, One for the Nginx container running the Symfony application and the other for the PHP container running PHP-FPM. The two containers share the same network (symfony), and the Symfony code volume is mounted to the corresponding container.

4. Run the Symfony application

1. Go back to the root directory of the Symfony project and run the following command to start the Docker container:

   cd ..
   docker-compose up -d

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In this way, Docker will create and start the Nginx and PHP containers, and then we can access the Symfony application in the browser.

2. Enter "http://localhost" in the browser to view the welcome page of the Symfony application.

So far, we have successfully set up the Symfony development environment using Docker and can develop and test locally.

Summary:
This article introduces how to use Docker to install Symfony and provides specific code examples. By using Docker, we can easily build a Symfony development environment and quickly deploy it to other environments. I hope this tutorial will be helpful to developers who are learning and using Symfony.

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