diff --git a/reproduce_container_bug.md b/reproduce_container_bug.md
index 2707119..46803ba 100644
--- a/reproduce_container_bug.md
+++ b/reproduce_container_bug.md
@@ -13,11 +13,19 @@ udocker load -i $WS_DIR/$CONTAINER_NAME.tar $CONTAINER_NAME
 rm /$WS_DIR/$CONTAINER_NAME.tar # you no longer need the tar archive
 ```
 
-Allocate a CPU node:
+Allocate a CPU node, and then:
 
 ```bash
 module load bigdata/udocker/1.3.4
-export WS_DIR=$(ws_find benchmarks)
+export WS_DIR=$(ws_find workspace_dir) # adjust this
+export UDOCKER_DIR="$WS_DIR/.udocker/"
+export UDOCKER_CONTAINERS="/run/user/$PBS_JOBID/udocker/containers"
+mkdir -p $UDOCKER_CONTAINERS
+mkdir -p /run/user/$PBS_JOBID/tmp
+export CONTAINER_NAME=ray
+export CONTAINER_TAG=latest
+udocker create --name=$CONTAINER_NAME:$CONTAINER_TAG
+udocker ps
 udocker run --volume $WS_DIR:/workspace --volume /run/user/$PBS_JOBID/tmp:/tmp $CONTAINER_NAME
 ```