NextCloud on LAMP on Stretch on Synology DS918+
- Download a bootable installation image (iso type) for the *nix flavour of your liking - i favor Debian.
- Save it on your DS plus series Synology NAS I got a DS918+ with 16GB RAM :-P
- Create a Virtual Machine in the Virtual Machine Manager on your DS plus series Synology NAS
- Minimum 1 CPU ;-) 1 Gb RAM and As much storage as you would like your NextCloud Server to be able to share to the future NextCloud users.