The ornamental design for a packagingcontainer, as shown and described.
FIG. 1 is a perspective view of a packaging container.
FIG. 2 is a front view of the packaging container of FIG. 1.
FIG. 3 is a rear view of the packaging container of FIG. 1.
FIG. 4 is a left side view of the packaging container of FIG. 1. A right side view thereof is omitted as it is a mirror image of the left side view.
FIG. 5 is a top view of the packaging container of FIG. 1; and,
FIG. 6 is a bottom view of the packaging container of FIG. 1.
Areas within the evenly spaced broken lines represent unclaimed environment only and forms no part of the claimed design. The dash-dot broken lines define the bounds of the claimed design and form no part thereof.