The ornamental design for a dockingstation, as shown and described.
FIG. 1 is the front/right-side/top perspective view of a docking station showing our new design;
FIG. 2 is the front elevational view thereof;
FIG. 3 is the rear elevational view thereof;
FIG. 4 is the left-side elevational view thereof;
FIG. 5 is the right-side elevational view thereof;
FIG. 6 is the top-side plan view thereof;
FIG. 7 is the bottom-side plan view thereof; and,
FIG. 8 is a perspective view thereof shown in use.
The surface treatment of the docking station forms no part of the claimed design, and the broken lines shown in the drawings represent unclaimed portions.