Docker Compose for PHP + MariaDB + Redis

Stack

PHP-FPM + Nginx + MariaDB + Redis

A plain PHP setup gives complete control over your application with no framework overhead — ideal for learning Docker with PHP, running legacy codebases, or building lightweight applications with minimal dependencies.

MariaDB 11 is a high-performance, MySQL-compatible database developed by the original MySQL authors. It offers additional storage engines and an improved query optimizer, and is a popular drop-in replacement in European production environments.

Redis is an in-memory data store used for caching, sessions, and message queuing. Symfony Cache and Messenger, and Laravel Cache and Queues, all support Redis natively — making it the most common addition to any PHP development stack.

When should you use this stack?

PHP with MariaDB and Redis is a solid default for local development when your production environment matches it. If you're evaluating alternatives, the related configurations below swap one piece at a time — same framework with a different database, or the same data layer under a different framework — so you can compare without starting from scratch.

Quick start

Start stack docker compose up -d

Web http://localhost:8080

compose.yml

services:
  nginx:
    image: nginx:latest
    ports:
      - "${WEB_PORT-8080}:80"
    volumes:
      - .:/var/www/html
      - ./docker/nginx/default.conf:/etc/nginx/conf.d/default.conf:ro
    depends_on:
      - php

  php:
    image: php:8.5-fpm
    volumes:
      - .:/var/www/html

  mariadb:
    image: mariadb:11
    environment:
      MARIADB_ROOT_PASSWORD: ${MARIADB_ROOT_PASSWORD-root}
      MARIADB_DATABASE: ${MARIADB_DATABASE-app}
      MARIADB_USER: ${MARIADB_USER-app}
      MARIADB_PASSWORD: ${MARIADB_PASSWORD-secret}
    ports:
      - "${MARIADB_PORT-3306}:3306"
    volumes:
      - mariadb_data:/var/lib/mysql
    healthcheck:
      test: ["CMD", "mariadb-admin", "ping", "-h", "localhost"]
      interval: 10s
      timeout: 5s
      retries: 5

  redis:
    image: redis:7
    ports:
      - "${REDIS_PORT-6379}:6379"

volumes:
  mariadb_data:

docker/nginx/default.conf

Run mkdir -p docker/nginx first

server {
    listen 80;
    server_name localhost;

    root /var/www/html;
    index index.php index.html;

    location / {
        try_files $uri /index.php$is_args$args;
    }

    location ~ \.php$ {
        fastcgi_pass php:9000;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }
}

.env.example

Optional — Compose uses ${VAR-default} fallbacks

WEB_PORT=8080

MARIADB_PORT=3306
MARIADB_DATABASE=app
MARIADB_USER=app
MARIADB_PASSWORD=secret

REDIS_PORT=6379

Frequently asked questions

How do I start this PHP stack?

Download the files, run `docker compose up -d` from the project root, then open http://localhost:8080 in your browser. The web port is configurable via the `WEB_PORT` variable in `.env`.

Which PHP version does this configuration use?

This page uses PHP 8.5 by default. Use the generator above to pick 8.1 through 8.5 and regenerate the files with your chosen version.

How do I connect to MariaDB from my host machine?

From your host, connect with `mariadb -h 127.0.0.1 -P 3306 -u app -p` (password `secret` by default). From other containers on the same network, use host `mariadb` and port 3306.

What port does Redis run on?

Redis listens on port 6379, mapped to your host by default. Connect with `redis-cli -h 127.0.0.1 -p 6379`.

Is this configuration production-ready?

No — it is tuned for local development (bind-mounted source, default credentials, exposed ports). For production, remove the bind mounts, set real secrets, and add resource limits and restart policies.