Slow docker possible cause

[Djennez]

With 10.000 files in my wp-content/plugins directory, Docker slowed down to a crawl. Removing these (empty, non extension) files sped up the site significantly.

My guess is that the node_modules and other folders with a lot of files in the plugin repos might cause this slowness as well. If we can exclude them from mounting in the Docker container, maybe we can speed things up.