How to solve Docker permission error when trigger by Jenkins

Question

My Jenkins is not run in Docker container, just tradional install to VPS. I got the following error when executing a simple test project. I am using Ubuntu 14, java 7, and s

Answer 1

In your VPS server terminal, do this to add your jenkins user to the docker group:

sudo usermod -aG docker jenkins

Then restart your jenkins server to refresh the group.

Take into account any security issue that this could produce:

Warning: The docker group grants privileges equivalent to the root user. For details on how this impacts security in your system, see Docker Daemon Attack Surface.

Refer to the docs

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Edit (mentioned by @iger): Just make sure to restart the Jenkins from command-line (i.e. sudo service jenkins restart), but not through the rest endpoint (http:///restart)