diff --git a/Dockerfile b/Dockerfile
index 9b6b59c..0970056 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,6 +2,7 @@ FROM ubuntu:latest
 
 RUN apt update -y && apt install -y make
 RUN apt install -y git
+RUN apt install -y python
 RUN apt install -y gcc
 RUN gcc --version
 RUN apt install -y build-essential
diff --git a/metrics.sh b/metrics.sh
index b89a6d6..bccc99d 100644
--- a/metrics.sh
+++ b/metrics.sh
@@ -6,6 +6,8 @@ cut -f2 wikiniews_results.tsv > hypothesis.txt
 awk 'BEGIN{FS=OFS="\t"}{print $0,"(sp1_"NR")"}' < reference.txt > reference.trn
 awk 'BEGIN{FS=OFS="\t"}{print $0,"(sp1_"NR")"}' < hypothesis.txt > hypothesis.trn
 
-python ./createWERandSRRFiles.py < sclite -f 0 -r reference.trn trn -h hypothesis.trn trn -e utf-8 -i rm -o all stdout
+sclite -f 0 -r reference.trn trn -h hypothesis.trn trn -e utf-8 -i rm -o all stdout > helper.txt
+
+python ./createWERandSRRFiles.py < helper.txt