How to Create and Run a PHP Container with Docker

PHP containers are virtual environments that isolate PHP applications, allowing them to run securely and independently; they are typically built from container images that bundle code and configuration, and managed by tools such as Docker, Kubernetes, or LXC.

Docker is the most popular container manager for PHP, offering a simple and flexible way to create, deploy, and maintain containers.

Step 1: Create a Dockerfile – The Dockerfile defines the image configuration, installing required extensions, copying Nginx configuration and application code, exposing port 80, and setting the startup command.

FROM php:7.4-fpm

# 安装PHP扩展
RUN docker-php-ext-install pdo_mysql

# 将Nginx配置文件复制到容器中
COPY nginx.conf /etc/nginx/nginx.conf

# 将应用程序代码复制到容器中
COPY app /var/www/html

# 暴露Nginx的HTTP端口
EXPOSE 80

# 启动Nginx和PHP-FPM服务
CMD service nginx start && php-fpm

Step 2: Build the container image – Run the Docker build command in the directory containing the Dockerfile. docker build -t my-php-container . Step 3: Run the container – Use the Docker run command to start the container in detached mode, mapping host port 8080 to container port 80. docker run -d -p 8080:80 my-php-container After the container starts, the PHP application can be accessed at http://localhost:8080, demonstrating how containers simplify deployment, scaling, and isolation compared to traditional servers.

Conclusion – Writing a PHP container with Docker is straightforward and provides better isolation, security, and DevOps compatibility, making it a recommended approach for modern PHP application development and deployment.