* Fix openssl temp key generation
1024 fails with `routines:SSL_CTX_use_certificate:ee key too small`
* Rename scalelite-nginx to scalelite-proxy
This has been changed in https://github.com/jfederico/scalelite-run/commit/bc94d6
* Fix domains variable in init-letsencrypt.sh
nginx looks for $URL_HOST and will break if the folder does not exist
