Like others have said I think you are in a losing battle here. You can move the container on to his property and put up a fence so it never happens again. Talk to a lawyer but once again you could be losing more money you might never see. I agree it suck that the neighbor did this but unfortunately you don't have a lot of options, to make him pay.
Ive had 1 issue with a neighbor while owning my land and it was over a deer feeder being right on our fence line (15 feet from the fence on his side) and he had a blind set up 52 yards away aiming in my direction. I asked him to move it and he was always too busy, but once deer season came he was not too busy to buy corn in it... so I called the local game warden, he shut down my neighbors season (since it was unsafe and would ultimately be trespassing by firearm) and found out he was leasing it, so talked to the land owner about the situation and he did not extend the lease.