The ornamental design for a containercap, as shown and described.
FIG. 1 is a top plan view of a container cap showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a left elevational view thereof, the right side elevational view being a mirror image thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a perspective view thereof, wherein the container cap is in use, the portion in dotted lines is for reference purpose only and forms no part of claimed invention.
FIG. 7 is a reference top plan view thereof;
FIG. 8 is a reference front elevational view thereof;
FIG. 9 is a cross-sectional view thereof along the line 9-9 of FIG. 7; and,
FIG. 10 is a cross-sectional view thereof along the line 10-10 of FIG. 8.