There's not too much to say here.
The database is a standard postgres image augmented with a simple startup script to create a dev and test database.
An out-of-the-box pgAdmin server is included. Once up, you can log in to it by navigating to localhost:8080 with the credentials defined in the top-level compose file* ([email protected], password). You must add the server to interact with it. Click "Add Server", name it whatever you want, navigate to the connection tab, fill in the details* (default DB password: postgres - screenshot below) and click save.
Both are wired up (database URL and credentials, ports etc) in the top-level compose file.
The database schema and CRUD are currently handled by SQLModel (really, SQLAlchemy) which serves as an ORM in the scraping code.