How to run docker commands from jenkins pipeline, permission error

[Muhammad Asif]

I have a jenkins pipeline which need to download and create docker image on the same machine where jenkins is installed. but I am facing the following error.

+ docker pull maven:3-alpine
Warning: failed to get default registry endpoint from daemon (Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.32/info: dial unix /var/run/docker.sock: connect: permission denied). Using system default: https://index.docker.io/v1/
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.32/images/create?fromImage=maven&tag=3-alpine: dial unix /var/run/docker.sock: connect: permission denied

[Adrien Lecharpentier]

Is your jenkins user part of the docker group?
-- Adrien

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