Baby turtles still require adequate tank setting, and lighting.. and by container, I am assuming it's not an aquarium? Could you post pictures or give more accurate description?
Taken from Austin's Turtle Page Website:
They do well on a diet of ‘whole-prey’ foods like worms, fish & crickets augmented by a quality commercial turtle food such as Mazuri or ReptoMin. Veggies should be offered, although some hatchlings do not take to them until they are older. Youngsters may or may not take to commercial foods. If they do not take in food known to contain Vitamin D3 (typically commercial foods), be sure to provide UV-B lighting. Bloodworms are fine for coaxing reluctant feeders but nutritionally insufficient for a staple. Finely shopped small earthworm bits, freshly killed & crushed guppies & small feeder crickets & grasshoppers are fine choices. Hatchlings are shy & fragile so don’t try feeding outside the tank until at least several weeks of well-being feeding in the tank (if you do this at all).
