Jenkins slave image

Add a new shell script configure_slave.sh as following:

#!/bin/bash
dnf install java-1.8.-openjdk git wget openssh-server passwd sudo -y
useradd jenkins && echo redhat|passwd jenkins --stdin
grep jenkins /etc/sudoers || echo "jenkins        ALL=(ALL)       NOPASSWD: ALL" >>/etc/sudoers
sed -i 's/Defaults    requiretty/#Defaults    requiretty/' /etc/sudoers
ssh-keygen -A

Touch a Dockerfile as following:

FROM fedora
ADD configure_slave.sh /root/
RUN sh -x /root/configure_slave.sh
CMD /usr/sbin/sshd 

docker build -t jenkins_slave .