[DOP-31004] Fix worker entrypoint

Author: dolfinus

docker/entrypoint_worker.sh

@@ -51,11 +51,11 @@ fi
 # SPARK-43540: add current working directory into executor classpath
 SPARK_CLASSPATH="$SPARK_CLASSPATH:$PWD"
 
-if ! [ -n ${SPARK_LOCAL_DIRS} ]; then
-  CURRENT_DIR=$(mktemp -d)
-else
+if [ -n "${SPARK_LOCAL_DIRS}" ]; then
   # /var/data/spark-local-123,/var/data/spark-local-234 -> /var/data/spark-local-123
   CURRENT_DIR=${SPARK_LOCAL_DIRS%%,*}
+else
+  CURRENT_DIR=$(mktemp -d)
 fi
 
 # current dir should always be writable