Q.Growing garlic
I would like to plant hard neck garlic in a soft pot. I have a 15 gallon one on hand with a mixture of soil, compost and some worm castings, sand and perlite mixed in. If I plant the garlic now, what do I do with the pot over winter? Do I leave it outside? I live in NW Indiana near Chicago. Also, can I plant garlic in a raised bed?

Your potted Garlic should remain outdoors.
Make sure you are planting a variety that is selected for a cold growing zone.
These articles will will help you.
http://www.extension.umn.edu/garden/fruit-vegetable/growing-garlic-in-minnesota/
https://www.gardeningknowhow.com/edible/herbs/garlic/growing-garlic-in-containers.htm