an apparatus for remotely locking a container includes a vehicle having a main frame and a tipper frame hingedly connected to the main frame , at least one of the main frame and tipper frame being configured to receive and support a container thereon ; an actuator assembly for pivoting the tipper frame relative the main frame between a reclined , container loading and transport position and an inclined , dumping position ; a container configured for receipt , transport and dumping of material , including a box defining a rear opening , and having a door hingedly connected with the container box to swing between an open , material dumping position and a closed position covering and sealing shut the rear opening ; at least one lock mechanism connected to at least one of the box and the door ; a locking assembly connected to the container ; and , an actuator assembly connected to the tipper frame and physically separate from the locking assembly , and when the container is juxtaposed atop the tipper frame said tipper frame is in the transport position , the actuator assembly is operable upon actuation to engage with and cause the locking assembly to engage with the at least one lock mechanism to pull the door tightly against the box and seal closed the opening .