2D Fluid inside Container mechanics

I’m having trouble maintaining fluid stability inside a container.

For example , I’m using this asset to simulate fluid mechanics :

However , in my game I’m trying to place the liquid in a moving container in which i want this liquid to respond properly with physics of the moving container.

The major problem I’m facing is that when the container moves fast , the liquid starts to penetrate or spill outside the container , although i have set the proper colliders and rigid bodies.

I’m not sure why this is occurring in the first place , but i have tried to change some properties of the rigid bodies but with no use (for example making the collision detection continuous instead of discrete).

This is the video where I’m displaying the issue :

A free fall example :

How would I enhance this ?

move the object using the physics system, not the transform itself like you do in the video