root@ip-172-31-90-28:~#  sudo useradd --home-dir /home/jenkins --create-home --shell /bin/bash jenkins
root@ip-172-31-90-28:~# sudo passwd jenkins

root@ip-172-31-90-28:~# awk -F: '/\/home/ {printf "%s:%s\n",$1,$3}' /etc/passwd
syslog:104
ubuntu:1000
jenkins:1001

root@ip-172-31-90-28:~# docker run -u 1001 -d --name jenkins -p 80:8080 -p 50000:50000  -it -v /home/jenkins:/var/jenkins_home  jenkins/jenkins:lts
0e48549d03a9dac098644728e0fec4ee23ed00724bbb6e9c2b24c8ddfbfc199a
root@ip-172-31-90-28:~# docker ps
CONTAINER ID        IMAGE                 COMMAND                  CREATED             STATUS              PORTS                                            NAMES
0e48549d03a9        jenkins/jenkins:lts   "/bin/tini -- /usr..."   5 seconds ago       Up 4 seconds        0.0.0.0:50000->50000/tcp, 0.0.0.0:80->8080/tcp   jenkins

root@ip-172-31-90-28:~# free
              total        used        free      shared  buff/cache   available
Mem:       15657380     1625624    11355580        8904     2676176    13660616
Swap:             0           0           0

https://wiki.jenkins.io/display/JENKINS/Publish+Over+SSH+Plugin
configure ssh server in manage jenkins | configure system
add build step to job
chmod 777 the pem file
root@ip-172-31-90-28:/home/jenkins/workspace# chmod 777 ob.pem

6:37:41 Started by user admin
16:37:41 Building in workspace /var/jenkins_home/workspace/oom-cd
16:37:41 SSH: Connecting from host [0e48549d03a9]
16:37:41 SSH: Connecting with configuration [ubuntu@dev.onap.info] ...
16:37:41 SSH: EXEC: STDOUT/STDERR from command [free] ...
16:37:41               total        used        free      shared  buff/cache   available
16:37:41 Mem:       62879948    43669236      477080      710116    18733632    17263732
16:37:41 Swap:             0           0           0
16:37:41 SSH: EXEC: completed after 201 ms
16:37:41 SSH: Disconnecting configuration [ubuntu@dev.onap.info] ...
16:37:41 SSH: Transferred 0 file(s)
16:37:41 Build step 'Send files or execute commands over SSH' changed build result to SUCCESS
16:37:41 Finished: SUCCESS


workaround to run a root sh from ubuntu user from the jenkins server
on jenkins job

exec-command = sudo /home/ubuntu/run_cd.sh

-rwsr-xr-x 1 root   root     51 Nov 11 16:54 run_cd.sh
on ec2 cd server ubuntu
in run_cd.sh
  cd /root
  sudo /root/cd.sh

ubuntu@ip-172-31-82-46:~$ sudo chown root.root run_cd.sh 
ubuntu@ip-172-31-82-46:~$ sudo chmod 4755 run_cd.sh 
ubuntu@ip-172-31-82-46:~$ ls -la

on ec2 cd server root
/root/cd.sh


16:58:52 SSH: EXEC: STDOUT/STDERR from command [sudo /home/ubuntu/run_cd.sh] ...
16:58:52 start
16:58:52 /root


for root on rackspace
root@jenkins:~# docker run -u 1001 -d --name jenkins -p 80:8080 -p 50000:50000  -it -v /home/jenkins:/var/jenkins_home  jenkins/jenkins:lts
root@jenkins:~# sudo iptables -I INPUT 1 -p tcp --dport 80 -j ACCEPT
root@jenkins:~# sudo iptables -I INPUT 1 -p tcp --dport 8080 -j ACCEPT
root@jenkins:~# sudo iptables -I INPUT 1 -p tcp --dport 50000 -j ACCEPT