centos6 docker image builder for jenkins

docker-jenkins/build-initial-centos6.sh

@@ -1,8 +1,12 @@
 cd /tmp
 
-apt-get update &&
-yum install -y
-	openssh-server openssh-client openjdk-11-jdk openjdk-11-jre \
+rm -f /etc/yum.repos.d/CentOS-*.repo &&
+yum -y update && 
+yum -y install \
+	openssh-server openssh-clients java-1.8.0-openjdk java-1.8.0-openjdk-devel \
 	gcc gcc-c++ gcc-gnat gcc-java make autoconf automake libtool vim-enhanced &&
 useradd -m -s /bin/bash jenkins &&
+sed -i 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g'  /etc/pam.d/sshd &&
+RUN ssh-keygen -q -N "" -t dsa -f /etc/ssh/ssh_host_dsa_key &&
+RUN ssh-keygen -q -N "" -t rsa -f /etc/ssh/ssh_host_rsa_key &&
 mkdir -p /var/run/sshd