Beaded paneling is readily available in oak and knotty pine. Check your local lumberyard ... many brackets you'll need and cutting enough 4-15/16 in. wide x 7-in. long rectangles from a full 1-1/8 in.
It takes a surprising amount of pine to build this cabinet ... The goal is to end up with a 1/8-in. space between the doors and the face frame and between the two doors. Sand or plane them as needed ...