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Docker Nginx PHP-FPM Separate Containers | Guide

Containerization has changed the way we develop, deploy, and scale applications. Docker is a leading containerization platform. It lets us isolate applications into self-contained units with ease.

Today, we are going to take a look at how to run NGINX and PHP-FPM in separate Docker containers. Let’s dive into the step-by-step process.

1. First, we have to set up a Docker network by running the following command:

   docker network create newnetwork
2. Next, we have to create a Dockerfile for the PHP-FPM container. Let’s take a look at an example:

   FROM php:latest
   
   RUN docker-php-ext-install mysqli pdo pdo_mysql
   
   COPY php-fpm.conf /usr/local/etc/php-fpm.d/www.conf

   The above example installs PHP and the necessary extensions. Additionally, it copies a custom PHP-FPM configuration file to the appropriate location.
3. After that, we have to build the Docker image for the PHP-FPM container by running this command:

   docker build -t php-fpm .
4. Then, we have to start the PHP-FPM container and attach it to the Docker network as seen below:

   docker run --name php-fpm --network=newnetwork -d php-fpm
5. Next, we have to create an NGINX configuration file, nginx.conf, that points to the PHP-FPM container. Here’s an example of an nginx.conf file:

   
   
   nginx
   
   Copy code
   
   server {
   
   listen 80;
   
   server_name localhost;
   
   location / {
   
   proxy_pass http://php-fpm:9000;
   
   proxy_set_header Host $host;
   
   }
   
   }
   
   
6. At this point, we have to start the NGINX container, map port 80, and attach it to the Docker network as seen below:

   docker run --name nginx --network=newnetwork -p 80:80 -v /path/to/nginx.conf:/etc/nginx/nginx.conf -d nginx

Now, we can check if the setup is working correctly by creating a PHP file with some PHP code to verify the connection between NGINX and PHP-FPM. Then, we have to place this file in a directory accessible by NGINX.

Now if everything is set up correctly, NGINX will pass the request to PHP-FPM, and the PHP code should execute successfully when we try to access the PHP file in a web browser using the IP or hostname of the Docker host.

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Conclusion

In brief, our Support Techs demonstrated how to run NGINX and PHP-FPM in separate Docker containers.