Fix rainloop nginx permissions

[jcnoir]

I think that the rainloop image needs the same patch than nexcloud for nginx permissions in non root mode (/etc/nginx.conf):

proxy_temp_path /tmp/proxy 1 2;
uwsgi_temp_path /tmp/uwsgi 1 2;
scgi_temp_path /tmp/scgi 1 2;

Thanks for these great images !

[Wonderfall]

9c8f89a

[jcnoir]

Thank you for the quick fix !