Fruit and veg (like courgettes) get taken out of any packaging, washed in soapy water then rinsed. Packaging immediately discarded.
Things like salad leaves that come packaged, I wash down the packaging with soapy water, rinse and drain before storing in the fridge.
Packaged meat - packaging thrown away and meat placed into container in fridge or goes into freezer bags.
Store cupboard items like packaged biscuits - packaging discarded, biscuits stored in their inner wrapper.
Eggs - go into an older cardboard container. I don't wash them, no real need. The current container goes into the porch to 'decontaminate' via quarantine.
Jars, juice bottles, milk bottles - all get washed with soapy water and rinsed.
tissue boxes go into the porch to decontaminate. Ditto anything else that can't be unpacked and doesn't require the cold.
After all that, wash down kitchen surfaces with soapy water and wash hands.
I don't want to catch this virus as I have an autoimmune disease, so I think it's worth taking these precautions for my peace of mind.