instruction: Create a Dockerfile for Node.js with production best practices
output: ```dockerfile
  from that file and add it to the wp-config.php
  configuration file.Connects to the MySQL container using the username wordpress and the
  password in /run/secrets/wp_db_password and creates the wordpress
  database if it does not yet exist.Stores its data, such as themes and plugins, in a volume called wpdata
  so these files persist when the service restarts.
  
  $ docker service create \
   --name wordpress \
   --replicas 1 \
   --network mysql_private \
   --publish published=30000,target=80 \
   --mount type=volume,source=wpdata,destination=/var/www/html \
   --secret source=mysql_password,target=wp_db_password \
   -e WORDPRESS_DB_USER="wordpress" \
   -e WORDPRESS_DB_PASSWORD_FILE="/run/secrets/wp_db_password" \
   -e WORDPRESS_DB_HOST="mysql:3306" \
   -e WORDPRESS_DB_NAME="wordpress" \
   wordpress:latest
  Verify the service is running using docker service ls and
  docker service ps commands.
  
  $ docker service ls
  
  ID NAME MODE REPLICAS IMAGE
  wvnh0siktqr3 mysql replicated 1/1 mysql:latest
  nzt5xzae4n62 wordpress replicated 1/1 wordpress:latest
  
  $ docker service ps wordpress
  
  ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
  aukx6hgs9gwc wordpress.1 wordpress:latest moby Running Running 52 seconds ago
  At this point, you could actually revoke the WordPress service's access to
  the mysql_password secret, because WordPress has copied the secret to its
  configuration file wp-config.php. Don't do that for now, because we
  use it later to facilitate rotating the MySQL password.Access http://localhost:30000/
  ```