We claim the ornamental design for a food container, as shown and described.
FIG. 1 is a perspective view of a food container, showing our new design, shown in environmental use;
FIG. 2 is a perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a front elevation view thereof, a rear elevation view being the same;
FIG. 5 is a side elevation view thereof, an opposite side elevation view being the same; and,
FIG. 6 is a bottom plan view thereof.
The broken lines in the figures illustrate the portions of the design that form no part of the claimed design. The broken lines lid in FIG. 1 illustrate environmental subject matter that form no part of the claimed design.