Docker installation of Symfony: detailed tutorial and steps

Installing Symfony with Docker: Detailed Tutorial and Steps

Introduction:
Symfony is a popular PHP web application development framework that provides powerful features and flexible architecture enable developers to quickly build high-quality web applications. Docker is a lightweight containerization technology that allows us to easily deploy and manage applications. This article will detail how to install Symfony using Docker and provide specific code examples.

Step 1: Install Docker and Docker Compose
First, we need to install Docker and Docker Compose in the local environment. You can download the corresponding installation package from the Docker official website according to the version and requirements of your operating system, and install it according to the official installation guide.

Step 2: Create a Symfony project
After installing Docker, we can download the official image of Symfony from Docker Hub, which contains all the environments and dependencies we need. Open a terminal and execute the following command to create a container for the Symfony project:

$ docker run -it --rm -v $(pwd):/app -w /app symfony/symfony composer create-project symfony/skeleton my_project

This command will create a Symfony project named "my_project" and save it in the current directory.

Step 3: Write Dockerfile
Create a file named Dockerfile in the project root directory and add the following content:

FROM php:7.4-fpm

RUN apt-get update && apt-get install -y 
    curl 
    git 
    unzip 
    libpq-dev 
    libzip-dev 
    && docker-php-ext-install pdo pdo_pgsql zip

RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

WORKDIR /app

COPY . /app

RUN composer install --no-scripts --no-interaction

EXPOSE 8000

CMD ["php", "-S", "0.0.0.0:8000", "-t", "public"]

This Dockerfile file describes the construction process of our container. It is based on the official PHP 7.4 image and has some necessary dependencies installed on top of it. It then copies all files in the current directory into the container's /app directory and uses composer to install the Symfony application's dependencies. Finally, we exposed port 8000 of the container and defined the command to run the Symfony application.

Step 4: Write the docker-compose.yml file
Create a file named docker-compose.yml in the project root directory and add the following content:

version: '3'
services:
  web:
    build:
      context: .
    ports:
      - 8000:8000
    volumes:
      - .:/app

This docker The -compose.yml file describes the orchestration process of our container. It defines a service called "web", which is built based on the Dockerfile we created in step three. It maps the container's port 8000 to the local port 8000, and mounts the local directory with the container's /app directory.

Step 5: Start the Symfony application
Execute the following command in the terminal to start the container of the Symfony application:

$ docker-compose up -d

This command will start a daemon mode container to enable Symfony Applications can run in the background. After a few moments, the Symfony application will be locally accessible on port 8000.

Conclusion:
By using Docker, we can install and deploy Symfony applications quickly and easily. This article provides detailed tutorials and steps, along with specific code examples, hoping to help readers easily use Docker to install Symfony and enjoy a good development experience. Let’s explore the unlimited potential of Docker and Symfony together!

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