Make Jenkins run docker without sudo

Question

I would like to run Docker shell commands on Jenkins like:

docker ps

Is it possible to do it with out using any plugi

Answer 1

Following approach worked for me to run docker commands without any plugins

Rather than adding jenkins user to docker group, allowed jenkins user to run sudo commands with out prompting for password and then created an alias to avoid sudo in Dockerfile for jenkins slave. I had to install docker client in the container which connects to daemon running in the host machine.

 ## allowing jenkins user to run sudo commands
RUN echo "jenkins ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
 ## avoid typing sudo in command line
RUN echo "alias docker='sudo docker '" >> /home/jenkins/.bashrc