Vanvikan is small town close to Trondheim. It is located on another side of fjord. You can take fast boat from-to trondheim. It cost NOK 105, but it is relative easy to sneek on ship. Another ship for cars is free for passengers, but harbor is far from Trondheim and Vanvikan.
There is great big metal container (not compressor) by Coop Market in Vanvikan. Container is not locked and it is easy to dumpster dive there. A big amount of bread, sweets, bananas, fruits, coffee was found in July 2017. This metal container is one of greatest ever. There are small dumpsters for organic waste by enter for employers too. It is visible from shop office to container, but they probably do not care so much. However, night is better.