Add initial Dockerfile

Dockerfile

+FROM centos:6
+
+RUN 	sed -i '/^mirrorlist/s/^/#/;/^#baseurl/{s/#//;s/mirror.centos.org\/centos\/$releasever/vault.centos.org\/6.10/}' /etc/yum.repos.d/*B* ; \
+	yum -y update && yum clean all ; \
+	yum -y groupinstall -y "Development Tools" ; \
+	yum -y install cmake
+
+CMD ["/bin/bash"]
+