Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

Question

Problem: I am trying to run docker inside vagrant, my Vagrantfile contains following:-

  config.vm.provision \"docker\" do |d|
     d.run \"ubuntu\",
                


        

Answer 1

i've gotten the same error response. when i checkout the daemon.json file, and i found that

{
     "registry-mirrors": ["http://hub-mirror.c.163.com"]
     "graph": "/etc/docker/mirror"
}

as you can see, i missed "," so i corrected it so simple. how careless i was!

{
     "registry-mirrors": ["http://hub-mirror.c.163.com"],
     "graph": "/etc/docker/mirror"
}

sometimes you need check your code carefully