The ornamental design for a side wall of a shipping container, as shown and described.
FIG. 1 is a perspective view of a side wall of a shipping container.
FIG. 2 is a front view of a side wall of a shipping container as shown in FIG. 1.
FIG. 3 is a back view of a side wall of a shipping container as shown in FIG. 1.
FIG. 4 is a top view of a side wall of a shipping container as shown in FIG. 1.
FIG. 5 is a bottom view of a side wall of a shipping container as shown in FIG. 1.
FIG. 6 is a side view of a side wall of a shipping container as shown in FIG. 1.
FIG. 7 is an opposite side view of a side wall of a shipping container as shown in FIG. 1; and,
FIG. 8 is side cross-section view of a side wall of a shipping container as shown in FIG. 1 taken along lines 8-8 in FIG. 2.
Throughout FIGS. 1-8, the broken lines denote environment and aspects of a side wall of a shipping container and formative components that form no part of the claimed design.