Run Maven GITLAB CI CD on Docker Runner

Hi Everyone,

Request you to please let me know where i am doing mistake for this GITLAB maven project, where docker is as executor.

I have set GITLAB CI CD Runner on Docker.
But I get this error
on DockerImage NaveenDesktop (1c89f98c)
Using Docker executor with image maven:3-jdk-7 …
ERROR: Preparation failed: error during connect: Get http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.18/info: open //./pipe/docker_engine: The system cannot find the file specified.

This is my gitlab-ci.yml script.

image: maven:3.5.3-jdk-8
#image: docker:latest

variables:
MAVEN_OPTS: “-Xms512m -Xmx1024m”

cache:
paths:
- .m2/repository
test:
script: “mvn test -Pqa”

build:
script: “mvn package -Dmaven.test.skip=true -Pqa -Duser.timezone=UTC”