Pastefy Slim is an simplified version of Pastefy that is exspecially made for setting a small paster in a few seconds up.
Go to your Website Directory and type git add remote origin https://github.com/interaapps/pastefy-slim.git && git pull origin master (Installing git on debian: apt install git).
Creating an own server for pastefy slim is very simple. There are only 2 requests that your server has to handle yet.
A POST Request with parameter contents.
A GET Request with parameter paste.
There is no official way to save the pastes. Do it on your way.