Configure Stage File Proxy on dev with Configuration Split

Stage File Proxy is a great dev module that will automatically fetch images from the live site when they're missing on your local. This let's you forget about syncing files and let them download as needed.

First install it with --dev so it's only installed in dev environments.

composer require drupal/stage_file_proxy drupal/config_split --dev

This will also require the Config Filter module for it's read/write api. Enable all three.

Go to Configuration > Development > Configuration Split.

Create a new Configuration Split, called Dev. Set the folder where you want and create a directory for it.

Now when you export, stage file proxy settings will be saved in your config/drupal_dev directory.

Remove any stage file config settings and export to your main config. You may want to disable the module, export, then reenable and export. This should clear it out from the main config and put the settings in the drupal_dev config directory