Revert "Commenting out docker kill statement for release"

This reverts commit b657f6f.

Author: ryanjbaxter

scripts/integration-tests.sh

@@ -10,4 +10,4 @@ echo 'testcontainers.reuse.enable=true' > ~/.testcontainers.properties
 ./mvnw clean install -DskipITs -DskipTests -B -Pdocs ${@}
 
 rm ~/.testcontainers.properties
-# docker kill $(docker ps -q)
+docker kill $(docker ps -q)