[task] Connection with the postgresql database

[AdamSulek]

• [ ] linking of aplication with PostgreSQL database with docker-compose.yml file

[AdamSulek]

connection with local machine

postgres container is running on 5432 port by default choose your local (or VM) port for example 3030 and map it to container port 5432 with directive:

ports:

• 3030:5432

to use connect with another service expose port 5432 with:

expose:

• 5432

set also hostname and another environment variable: POSTGRES_USER: POSTGRES_DB: POSTGRES_PASSWORD: