[Docker] PhpMyAdmin on Synology NAS

phpMyAdmin is one of the easiest ways to manage MySQL or MariaDB databases through a web interface. On Synology NAS, you can quickly spin it up with Docker.

In this setup, we’ll assume:

• You already have a running database (not creating a new one here).
• The database is reachable at yourdbdomain.com on port 3306.
• We’ll connect phpMyAdmin to that existing database.

docker-compose.yml

Here’s a simple configuration:

services:
  phpmyadmin:
    image: phpmyadmin:5.2.1
    container_name: phpmyadmin
    restart: unless-stopped
    ports:
      - "3077:80"   # Access phpMyAdmin at http://your-nas-ip:3077
    environment:
      PMA_HOST: yourdbdomain.com
      PMA_PORT: 3306
      PMA_ABSOLUTE_URI: https://db.yourdomain.com

Without docker-compose

If you prefer not to use docker-compose, you can run phpMyAdmin directly as a container. All you need is a few environment variables and a port mapping:

docker run -d \
--name phpmyadmin \
-p 3077:80 \
-e PMA_HOST=yourdbdomain.com \
-e PMA_PORT=3306 \
phpmyadmin:latest

This gives you the exact same result — phpMyAdmin will connect to your existing database at yourdbdomain.com:3306 and be available at http://your-nas-ip:3077.

How it works

• PMA_HOST and PMA_PORT tell phpMyAdmin which database server to connect to.
• Since the database already exists, phpMyAdmin will simply connect to it. No new database container is created in this stack.
• Port 3077 on your NAS is mapped to port 80 inside the container. So you can reach phpMyAdmin at:

http://your-nas-ip:3077

or, if you set up Synology’s Reverse Proxy, at:

https://db.yourdomain.com

Notes

• Login with your existing database username and password.
• phpMyAdmin does not create databases; it only connects to your existing one.
• For better security, configure Synology’s Reverse Proxy + SSL certificate and avoid exposing port 3077 directly to the internet.

✅ That’s it — phpMyAdmin is now running on your Synology NAS, connected to your existing database at yourdbdomain.com:3306.