If your in self isolation due to travel or possible exposure. PLEASE have a friend, neighbour, relative pick up and drop off your groceries. Even doing drive thru of pick ups should not be done. I know it sucks, I am on day 9 and am surprised that my wife hasnt smothered me in my sleep yet.
Stay home away from others, and let them help you.
We have had my sister drop food off to us. We cooked a turkey, only touched the outside container, left it on the porch when she drove up and put wipes out so she could wipe down the container.
She then put our groceries on the porch for us. Once she was close to her car, then we came out and chatted from a safe distance. It sucks, but you have to do this to flatten the line.
Stay safe.