Docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock

Question

I am new to docker. I just tried to use docker in my local machine(Ubuntu 16.04) with Jenkins.

I configured a new job with below pipeline script.

Answer 1

On the server where Jenkins is running, I used

sudo setfacl -m user:tomcat:rw /var/run/docker.sock

And then run each docker container with

-v /var/run/docker.sock:/var/run/docker.sock

Using setfacl seems a better option, and no "-u user" is needed. The containers then run as the same user that is running Jenkins. But I would appreciate any feedback from the security experts.