diff --git a/Dockerfile b/Dockerfile
index 8ae66b3b..08131897 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,11 @@
 FROM centos:7
 
-RUN yum -y -q install \
+RUN sed -i \
+    -e 's/^mirrorlist/#mirrorlist/' \
+    -e 's/^#baseurl/baseurl/' \
+    -e 's/mirror\.centos\.org/vault.centos.org/' \
+    /etc/yum.repos.d/*.repo && \
+    yum -y -q install \
         libXpm net-tools bzip2 wget vim gcc gcc-c++ samba dos2unix glibc-devel glibc.i686 glibc-devel.i686 \
         mpfr.i686 mpfr-devel.i686 rsync autogen autoconf automake libtool gettext* bison binutils \
         flex device-mapper-devel SDL libpciaccess libusb freetype freetype-devel gnu-free-* qemu-* virt-* \