The ornamental design for a containercarrier, as shown and described.
FIG. 1 is a top plan view of the container carrier, the bottom view being
essentially the same as in FIG. 1;
FIG. 2 is a side elevational view of the container carrier, the opposing
side elevational view being identical thereto;
FIG. 3 is an end elevational view of the container carrier, the opposing
end elevational view being identical thereto; and,
FIG. 4 is a reduced perspective view of the carrier container, the broken
lines showing containers is for illustrative purposes only and forming no
part of the claimed design.