We claim the ornamental design for a container, as shown and described.
FIG. 1 is a front, left, top perspective view of a container showing our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a back elevation view thereof;
FIG. 4 is a left side elevation view thereof, the right side elevation view being a mirror image thereof; and,
FIG. 5 is a top side view thereof.
The simple dashed broken line shows unclaimed subject matter (the lid, closure mechanism and lower portion of the container) and forms no part of the claimed design; whereas, the special dot-dash broken line defines the bounds of the claimed design area, and, itself, forms no part of the claimed design.