A collapsible container assembly that includes a first lateral side wall having a door frame and a first shear wall, a second lateral side wall that opposes the first lateral side wall and includes a wall panel and a second shear wall, an outboard wall that includes upper and lower panels that are pivotably connected to one another, an inboard wall that opposes the outboard wall and includes upper and lower panels that are pivotably connected to one another, a base and a top. The first shear wall is pivotable between a use position where the first shear wall is not positioned in the door frame interior and a stowed position where the first shear wall is positioned in the door frame interior. The second shear wall is pivotable between a use position where the second shear wall is not positioned in the wall panel interior and a stowed position where the second shear wall is positioned in the wall panel interior. The door frame, wall panel, inboard wall and outboard wall are pivotably connected to the base, and the inboard wall and outboard wall are pivotably connected to the top.