Using compost for container vegetable garden
I am planning to start a container garden on my balcony this year. I will use bags of 40 liters each for each plant (tomato, green pepper, eggplant).
I would like to use compost as the soil in the container, but I am not sure which compost should I use. What are the specs/ingredients (NPK) that I should obtain for this purpose?
P.S. I am not planning to use any amendments during the growing time.
Thank you for your help