I installed the Docker installation to my UNIX (macOS), once I execute simple commands like,
$ docker run ubuntu
it shows following error prompted in terminal:
docker: Error response from daemon: dial unix docker.raw.sock: connect: no such file or directory.
I tried in several docker commands, but docker daemon
throws the mentioned error message.
This is issue of Docker Engine startup not linked with docker demons, I resolved this problem by Reset to Factory Settings
option in Docker Troubleshooting pane