Floor Jacks by Mytee Products. Just insert the jack lug head into the bottom of the corner casting of the container and then turn it upside down. Use a hydraulic bottle jack sold seperatly to raise the container off the ground. you raise your container to the leveled height you will then place shims or wood under your container to make it completely level.

Mytee Products Shipping Container Jack Lug Jack Leveling Attachment – Storage Container Leveler Booster – used to Level Shipping Container with Ground
$47.52