--- a/contrib/docker/centos6	Sun Jul 01 23:36:53 2018 +0900
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,20 +0,0 @@
-FROM centos:centos6
-RUN yum install -y \
-	gcc \
-	gettext \
-	make \
-	python-devel \
-	python-docutils \
-	rpm-build \
-	tar
-
-# For creating repo meta data
-RUN yum install -y createrepo
-
-# For python
-RUN yum install -y \
-	bzip2-devel \
-	ncurses-devel \
-	openssl-devel \
-	readline-devel \
-	zlib-devel