I claim the ornamental design for a packaging container, as shown and described.
FIG. 1 is a perspective view of the packaging container;
FIG. 2 is a front view of the packaging container;
FIG. 3. is a side view of the packaging container;
FIG. 4. is a top view of the packaging container; and,
FIG. 5. is a bottom view of the packaging container.
The front view of the packaging container is identical to the rear view thereof.
Inner horizontal lines at the upper and bottom ends of the packaging container show the sealed portion of the claimed design.
The shade lines present on the perspective and front views show that the container portion is rounded and protuberant in contrast to the flat sealed portion.