I found a simple solution to the Gitlab error: Cannot connect to the Docker daemon at tcp://docker:2375. Is the docker daemon running?
Just register GitLab Runner in privileged mode and set : –docker-volumes “/certs/client”
gitlab-runner register -n \ --url https://Gitlab_Url/ \ --registration-token TOKEN \ --executor docker \ --description "My Docker Runner" \ --docker-image "docker" \ --docker-privileged \ --docker-volumes "/certs/client"
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