Hi,
Privatebin is minimalist, open source online pastebin where the server has zero knowledge of stored data.
It seems that there are Docker images available and regulary updated. To me, the most interesting would be flat file storage to minimize dependencies on too much rotating gears such as full blown DB storage (not sure it is configurable)
Obviously making the templates and configuration files configurable and survivable between upgrades and other changes is preferred.
TIA