personal/q3k/minecraft: add worldedit+worldguard

This assumes that a new Docker image will be built at tag spigot-1.15.2-r3.

Change-Id: Ia230510d2400faa3631bde99a96366d72e69a4bd
diff --git a/personal/q3k/minecraft/Dockerfile-vanilla b/personal/q3k/minecraft/Dockerfile-vanilla
index 9ba7478..61852a5 100644
--- a/personal/q3k/minecraft/Dockerfile-vanilla
+++ b/personal/q3k/minecraft/Dockerfile-vanilla
@@ -37,6 +37,9 @@
     rm -rf build ;\
     mv spigot*.jar spigot.jar
 
+ADD worldedit-bukkit-7.1.0.jar .
+ADD worldguard-bukkit-7.0.2.jar .
+
 RUN set -e -x ;\
     VERSION=1.15.2 ;\
     mkdir -p /home/minecraft/.minecraft/versions/${VERSION}/ ;\