On Bitnami's Jenkins Run Docker Commands in Jenkins shell ubuntu

I was trying to run docker during jenkins build rather then using docker plugin i was searching to run docker's command in shell.

bitnami jenkins use tomcat user and for ssh login it use bitnami default username.

I have purchased jenkins from bitnami on aws ec2. I was facing User permission issue and tried lots of solution & searched for 2 days.

I did changes in sudoers file using sudo Visudo
made new user with jenkins name try to change default user in jenkin shell
Removed Tomcat user name form ubuntu
I was knowing it is only permission issue but i was stuck on user permission of shell