How to: Nginx fails in my minified image
If you see `nginx: [emerg] mkdir() "/var/lib/nginx/body" failed` it means your nginx setup uses a non-standard temporary directory. Nginx will fail if the base directory for its temporary folders doesn't exist (they won't create the missing intermediate directories). Normally it's `/var/lib/nginx`, but if you have a custom config that points to something else you'll need to add an `--include-path` flag as an extra flag when you run the Slim app.