Fix a regression

scripts/run-3

@@ -45,7 +45,7 @@ docker run \
   --user root \
   -v `pwd`/out:/home/donar \
   registry.gitlab.inria.fr/qdufour/donar \
-  chown -R `id -u`:`id -g` /home/donar
+  chown -R 1000:1000 /home/donar
 
 for i in $(seq 0 $(expr $instances - 1)); do
 echo "Spawning container for instance=$i..."