diff --git a/5.020.000/Dockerfile b/5.020.000/Dockerfile
index b344018..b0a163d 100644
--- a/5.020.000/Dockerfile
+++ b/5.020.000/Dockerfile
@@ -4,8 +4,7 @@ RUN apt-get update && apt-get install -y curl procps
 
 RUN mkdir /usr/src/perl
 WORKDIR /usr/src/perl
-# RUN curl -SL http://www.cpan.org/src/5.0/perl-5.20.0.tar.gz \
-RUN curl -SL http://localhost/src/5.0/perl-5.20.0.tar.gz \
+RUN curl -SL http://www.cpan.org/src/5.0/perl-5.20.0.tar.gz \
                 | tar -xz --strip-components=1
 
 RUN ./Configure -des \
@@ -15,3 +14,6 @@ RUN ./Configure -des \
         && make veryclean
 
 CMD ["perl5.20.0 -V"]
+
+WORKDIR /root
+RUN rm -fR /usr/src/perl