Build/Test Tools: Introduce LOCAL_DB_PORTS environment variable.

This change introduces a `LOCAL_DB_PORTS` environment variable to the `wordpress-develop` Docker environment. This allows users to establish a persistent port mapping for the MySQL database, making it easier to connect to with development tools like PhpStorm. Otherwise, the default database port is ephemeral.

For example, setting `LOCAL_DB_PORTS="33060:3306"` in the `.env` file will make the MySQL container consistently accessible on port `33060`.

Developed in WordPress#9968.

Props westonruter, mindctrl.
See #48281.
Fixes #64014.


git-svn-id: https://develop.svn.wordpress.org/trunk@60926 602fd350-edb4-49c9-b593-d223f7449a82

Author: westonruter

docker-compose.yml

@@ -70,7 +70,7 @@ services:
       - wpdevnet
 
     ports:
-      - "3306"
+      - "${LOCAL_DB_PORTS-3306}"
 
     environment:
       MYSQL_ROOT_PASSWORD: password