The ornamental design for a containercap with protectivecover, as shown and described.
FIG. 1 is an illustration of a front-top perspective view of the container cap with protective cover.
FIG. 2 is an illustration of a top view of the container cap with protective cover.
FIG. 3 is an illustration of a left-side view of the container cap with protective cover.
FIG. 4 is an illustration of the right-side view of the container cap with protective cover.
FIG. 5 is an illustration of the front-side view of the container cap with protective cover.
FIG. 6 is an illustration of the back-side view of the container cap with protective cover; and,
FIG. 7 is an illustration of a left-side view of the container cap with protective cover showing one possible environment related to the container cap with protective cover.
The broken lines shown in the drawings disclose one possible environment related to the claimed design and form no part of the claimed design.