Install pgadmin4: https://www.pgadmin.org/download/pgadmin-4-apt/
Creating docker image
Run 4 instances of databse
stop all containers
- run pgAdmin4 through http://127.0.0.1/pgadmin4
- registser instances to pgAdmin4
localhost:5432
localhost:5433
localhost:5434
localhost:5435
Test with executing query: select version()
https://www.postgresqltutorial.com/postgresql-python/connect/