For authentication visit "/register"; Post username & password request in the body to authenticate; Your data will be saved in the database (password will be hashed).
For authorization visit "/login"; Post username & password request in the body to authorize; if successfull you'll recieve a token in the response header.
You can use the token to see the protected path "/api/posts"; if allowed you'll see the top secret information.
Or you can upload a file in databse if you're logged in. Just use that token and visit "/upload".
Main technologies used in this project are: Nodejs, Expressjs, TypeScript, JWT, PostgreSQL, TypeORM, Joi, BCrypt, Docker, multer