What is this project all about?

In this project, I created an application that can be used specifically by university students in order to create communities that share similar interests, these communities are called "Groups", each group has a thread to publish posts to let other members know latest news and also another thread to publish events (picnics, football games, concerts ...), and each group has an admin who manages the members. I used Flutter to create a cross-platform application that uses spring boot as a backend (it's dockerized and hosted in the Render website), for the database I chose MongoDB and finally Firebase to store images in order to keep the database light. The authentication system is a JWT type.