The ornamental design for a dockingstation, as shown and described.
FIG. 1 is a perspective view of a docking station showing our new design;
FIG. 2 is a front elevational view of the docking station of FIG. 1;
FIG. 3 is a rear elevational view of the docking station of FIG. 1;
FIG. 4 is a right side elevational view of the docking station of FIG. 1;
FIG. 5 is a left side elevational view of the docking station of FIG. 1;
FIG. 6 is a top plan view of the docking station of FIG. 1; and,
FIG. 7 is a bottom plan view of the docking station of FIG. 1.
The broken lines immediately adjacent the shading depict the bounds of the claimed design, while all other broken lines depict environment. The broken lines form no part of the claimed design.