The ornamental design for a dockingstation, as shown and described.
FIG. 1 is a perspective view of a docking station showing the claimed design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is another perspective view showing the docking station being in a usage state; and,
FIG. 9 is another perspective view showing the docking station being in another usage state with an attached environmental tablet.
The additional broken lines in FIG. 9 showing the attached tablet depict environmental structure and form no part of the claim, while all other broken lines depict portions of the docking station that form no part of the claimed design.