DMS (Document Management System)

CircleCI build:

Simple tool for storing and administrating your documents.

Requirements

Each file consist of the content and metadata stored in the database (Author, version, last modified date, category, ...).
Users have roles and each role is able to see files for these roles.
Files can be secure - visible only to the author.
Files are versioned - it is possible to get back to the any previous version of the file. It is possible thanks to the parrent_id in the metadata.
Files has to be acknowledged by someone with higher privileges. (Role)