You can download the addon and put it into your com.mojang/behaviour_packs folder below:
In Minecraft, an advantage of wolves, neutral and tamed, is that they attack skeletons. The skeletons fight back, resulting in a winner at the end, either the wolf or skeleton.
However, I wanted to meddle with this. Mojang added Addons back in Minecraft PE version 0.16.0. You can install addons for free and skeletons start riding wolves’ backs.
Skeletons are still hostile in survival, giving wolves the ability to make the skeletons faster.