docker-compose.yml<\/strong> file:<\/p>services:\n nginx-proxy:\n image: jwilder\/nginx-proxy\n container_name: nginx-proxy\n ports:\n - \"80:80\"\n - \"443:443\"\n volumes:\n - \/var\/run\/docker.sock:\/tmp\/docker.sock:ro\n letsencrypt-nginx-proxy-companion:\n image: jrcs\/letsencrypt-nginx-proxy-companion\n container_name: letsencrypt\n environment:\n NGINX_PROXY_CONTAINER: nginx-proxy\n volumes:\n - \/var\/run\/docker.sock:\/var\/run\/docker.sock:ro\n - .\/certs:\/etc\/nginx\/certs\n - .\/vhost.d:\/etc\/nginx\/vhost.d\n - .\/html:\/usr\/share\/nginx\/html<\/pre>Next, remove port mapping from the wordpress<\/strong> service to avoid conflicts with nginx-proxy<\/strong>. Also, include SSL labels by replacing your_email<\/strong> and your_domain.com<\/strong> with your actual credentials:<\/p>wordpress:\n image: wordpress:latest\n labels:\n - \"VIRTUAL_HOST=your_domain.com\"\n - \"LETSENCRYPT_HOST=your_domain.com\"\n - \"LETSENCRYPT_EMAIL=your_email@your_domain.com\"<\/pre>In the same wordpress <\/strong>service, mount only the wp-content<\/strong> directory so that only necessary files are shared between the host and the container:<\/p>volumes:\n - .\/wp-content:\/var\/www\/html\/wp-content<\/pre>Here’s the final docker-compose.yml<\/strong> content after using environment variables and adding SSL support with NGINX:<\/p>version: \"3\"\n\nservices:\n db:\n image: mysql:latest\n restart: always\n environment:\n MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}\n MYSQL_DATABASE: ${MYSQL_DATABASE}\n MYSQL_USER: ${MYSQL_USER}\n MYSQL_PASSWORD: ${MYSQL_PASSWORD}\n volumes:\n - mysql:\/var\/lib\/mysql\n\n wordpress:\n depends_on:\n - db\n image: wordpress:latest\n restart: always\n environment:\n WORDPRESS_DB_HOST: db:3306\n WORDPRESS_DB_USER: ${MYSQL_USER}\n WORDPRESS_DB_PASSWORD: ${MYSQL_PASSWORD}\n WORDPRESS_DB_NAME: ${MYSQL_DATABASE}\n volumes:\n - .\/wp-content:\/var\/www\/html\/wp-content\n labels:\n - \"VIRTUAL_HOST=your_domain.com\"\n - \"LETSENCRYPT_HOST=your_domain.com\"\n - \"LETSENCRYPT_EMAIL=your_email@your_domain.com\"\n\n phpmyadmin:\n image: phpmyadmin\/phpmyadmin\n restart: always\n ports:\n - \"8080:80\"\n environment:\n PMA_HOST: db\n PMA_USER: ${MYSQL_USER}\n PMA_PASSWORD: ${MYSQL_PASSWORD}\n\n nginx-proxy:\n image: jwilder\/nginx-proxy\n container_name: nginx-proxy\n ports:\n - \"80:80\"\n - \"443:443\"\n volumes:\n - \/var\/run\/docker.sock:\/tmp\/docker.sock:ro\n - .\/certs:\/etc\/nginx\/certs\n - .\/vhost.d:\/etc\/nginx\/vhost.d\n - .\/html:\/usr\/share\/nginx\/html\n\n letsencrypt-nginx-proxy-companion:\n image: jrcs\/letsencrypt-nginx-proxy-companion\n container_name: letsencrypt\n environment:\n NGINX_PROXY_CONTAINER: nginx-proxy\n volumes:\n - \/var\/run\/docker.sock:\/var\/run\/docker.sock:ro\n - .\/certs:\/etc\/nginx\/certs\n - .\/vhost.d:\/etc\/nginx\/vhost.d\n - .\/html:\/usr\/share\/nginx\/html\n\nvolumes:\n mysql: {}<\/pre>Don’t forget to save these changes and restart Docker Compose afterward:<\/p>
docker-compose up -d<\/pre>7. Manage and scale WordPress with Docker<\/h3> After running WordPress in Docker for a while, scale your setup to optimize its performance and regularly back up your files to maintain data integrity. Here’s how:<\/p>
Scaling WordPress containers<\/strong><\/p>As your site traffic grows, consider scaling your WordPress service to run multiple containers. It lets you evenly distribute user requests across different containers for optimal performance and uptime.<\/p>
In your Docker Compose file, specify the desired number of replicas, such as 3<\/strong>, to add more instances of your WordPress container:<\/p> wordpress:\n depends_on:\n - db\n image: wordpress:latest\n restart: always\n ports:\n - \"80:80\"\n environment:\n WORDPRESS_DB_HOST: db:3306\n WORDPRESS_DB_USER: ${MYSQL_USER}\n WORDPRESS_DB_PASSWORD: ${MYSQL_PASSWORD}\n WORDPRESS_DB_NAME: ${MYSQL_DATABASE}\n volumes:\n - \".\/:\/var\/www\/html\"\n deploy:\n replicas: 3<\/pre>Apply your changes by running:<\/p>
docker-compose up -d --scale wordpress=3<\/pre>Docker will now start additional WordPress containers and distribute traffic evenly between them.<\/p>
Backing up WordPress files<\/strong><\/p>To protect your WordPress site against data loss or corruption, you should back up both WordPress files and the database.<\/p>
Since Docker mounts the WordPress directory as a volume, you can back up this directory using a simple command like this:<\/p>
cp -r \/path\/to\/wordpress \/path\/to\/backup\/location<\/pre>To back up your MySQL database, run the following command. Replace [db_container_name]<\/strong>, [MYSQL_USER], [MYSQL_PASSWORD]<\/strong>, and [MYSQL_DATABASE]<\/strong> with your actual database container name and credentials:<\/p>docker exec [db_container_name] \/usr\/bin\/mysqldump -u [MYSQL_USER] -p[MYSQL_PASSWORD] [MYSQL_DATABASE] > backup.sql<\/pre>This command creates a database dump, which you can restore later if needed.<\/p>
Alternatively, Hostinger VPS customers can use our built-in backup tools to easily back up and restore data. To access these features, go to Backup & Monitoring → Snapshots & Backups<\/strong> in your VPS dashboard’s left sidebar.<\/p>Then, choose to either create a snapshot to capture your current setup or restore previous data from an automated weekly backup.<\/p>
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\n \n <\/svg>\n \n Manage backups with Kodee <\/p>\n <\/div>\n
You can list available backups and manage backup schedule by simply asking Kodee<\/strong>. For example, ask, \"List available backups on my hostname.com VPS.\"<\/p>\n <\/div>\n \n\n\n\n<\/p>Conclusion<\/h2> In this article, you’ve learned how to install and configure WordPress using Docker on an Ubuntu VPS. From setting up Docker Compose to customizing for production environments, you now have a fully functional WordPress setup in a containerized environment.<\/p>
After running WordPress using Docker, consider optimizing your site further, such as by using a content delivery network (CDN). You can also set up different Docker containers if you decide to host other applications on the same VPS.<\/p>
If you have any questions or would like to share your experience developing WordPress websites with Docker, feel free to use the comment box below.<\/p>
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