QGIS equivalent for ArcMap spatial join for purpose of distances from points to polygon?

It is relatively easy to calculate distances from points to a polygon in ArcMap by doing a spatial join and selecting the option for creating a field containing the minimum distance information. i.e. it generates a field containing the distance from each point to the boundary of the polygon.

Is there a relatively simple way to do the same thing in QGIS? I've tried NN Join, but it crashes each time I try to use it. I've also tried the Processing toolbox's 'distance to hub', but it gives the distance to the centroid of the polygon instead of the boundary.