I recently watched a video of a family that did this during the winter. One of the things they mentioned was an inexpensive camp stove. Didn't know they existed and if it's really cold out that would be better than the rocket stove I set up.
It's a lumper, not a pumper, lol. Someone that unloads the freight that's inside a container at a warehouse. Used to be done primarily by Teamsters but they came up with a "50 mile rule" or something like that saying it has to be done by ILWU.
As I recall, cranes don't load containers onto chassis for outbound drivers, only for the driver to get them to the place where they stack the containers and then a very large forklift moves them onto the stack. The same forklift will place the containers onto the chassis for the driver picking it up for delivery.
You're only going to see the cranes moving when a ship is in port, loading or unloading the ship.
Lumpers work in a warehouse unloading cargo from the containers, as I recall. The warehouses didn't use to work 24/7, but as far as loading & unloading containers onto the docks that was a 24/7 operation when I was in shipping 25 years ago.
I think the reason most of us felt that the FBI were the "good guys" growing up was because of how they were portrayed on TV shows.