It would be good to have full readme regarding `TypesafeJDBCPlayground`

[vasiliybondarenko]

TypesafeJDBCPlayground class causes compile errors due to attempts to connect to a DB presumably. So instructions might be useful.

[daniel-ciocirlan]

The course explains everything!
In short:

1. spin up the Postgres database with docker compose up
2. profit

[vasiliybondarenko]

Thank you. I haven't watched this JDBC related stuff yet.