diff --git a/Dockerfile b/Dockerfile
index dfb01a67fc0d13361182a0a02292a2d9d48aa1b3..ba781cc87f14bd5ec045f4d907047ff280c73779 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM openjdk:11
 
 ENV DEBIAN_FRONTEND noninteractive
-RUN apt-get update && apt-get install -y graphviz && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y graphviz cloc && rm -rf /var/lib/apt/lists/*
 
 ENV HOME /home/user
 RUN useradd --create-home --home-dir $HOME user \
diff --git a/cloc/run-cloc.sh b/cloc/run-cloc.sh
index 8cacc233e148fcb4821ce4af7f1e4481db059bcd..51154f51570c63bc133c36c9b40375cd3e71f1f7 100755
--- a/cloc/run-cloc.sh
+++ b/cloc/run-cloc.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/bin/bash
 shopt -s globstar
 
 if [ ]
@@ -7,7 +7,7 @@ then
 else
 
 # remove previous results
-rm *-result.txt
+rm -f *-result.txt
 
 #  --force-lang=Java,jrag --force-lang=Java,jadd
 DEF_FILE=my_definitions.txt